He's been a bit quiet in more than just the end of year tour. You could tell in the Super 15 that the 2013 form wasn't there. I know Kiwi posters are convinced that Smith is the descendant of Jesus Christ, but there are actually more in-form people out there. If you look at clean breaks, tries, meters gained, things of that nature - Folau is better.
In both their respective games against Wales each, the Wallabies and All Blacks had roughly the same amount of possession against the Welsh. Folau made 146 meters, Smith made 52. Folau beat 3 defenders, Smith beat 0. Folau made 2 clean breaks, Smith made 0. Folau scored 2 tries, Smith assisted in 1. There is nothing slight about that, and it is typical of the statistics. Smith has made around 40 to 50 meters running on this tour, Folau usually makes AT LEAST 60, sometimes going into the hundreds. The one exception was the match against England. But before that game, is was 42 meters against SA. What is slight, is Ben Smith's so-called tackle advantage. Nowhere in the statistics does it suggest Folau misses an outrageous amount. Smith, at stretch, makes a couple more than Folau every so often. The notion that Ben is the best fullback in the world is just a myth, and I don't know why posters cling to it. Yeah, Smith kicks better. I could use the same argument for Dagg vs. Smith and those very supporters would (and have) reject it.
I've gone with the offensive fullback over the one who is defensive mainly because this is supposedly a team with the best forwards in the world on current form. Also, while I like Mike Brown as well, he hasn't had the best tour either.
Comparing stats from a one off game is completely pointless. If you must compare stats you need to do it of a decent periods of time, rather than just selecting a one off game that supports your point of view (then claiming it is typical of the statistics when it is clearly not!)
Yes Ben Smith hasn't quite matched his 2013 form he we was New Zealand Super Rugby player of the year and was nominated for IRB Player of the Year. However he has still had a fantastic year. He was outstanding for the Highlanders. His tackle breaking / linbreaking / metres run stats were (slightly) down on his 2013 season (2013 - 186 carries, 1427 metres, 19 clean breaks, 57 defenders beaten; 2014 - 190 carries, 1265 metres, 14 clean breaks, 47 defenders beaten) but his tackling and breakdown work was much improved, and what really stood out was his distribution. He created a lot of linebreaks and tries for the Highlanders this season with his passing game. He was phenomenal against England once shifted to fullback, and continued that form into the Rugby Championship before he was shifted back to the right wing (where he - like most who played on the right wing for the AB's this season - was starved off ball). He was a standout against South Africa in Wellington when shifted to 12 as he actually got the ball in his hands! He then had a quieter (by his standards) but still very good end of year tour.
If we compare Super Rugby stats I think you will find that Ben Smith made more metres than Folau (1265m in 190 carries vs 1187m in 185 carries). So if we compare them
as fullbacks they make a very similar number of metres per run - Folau runs slightly more metres per game (nowhere near 40-60 though!) simply because he runs the ball more per match. Folau obviously had a big advantage in terms of clean breaks (25 vs 14) and an slim advantage in defenders beaten (52 vs 47) at Super Rugby level. This is behind the Waratahs forward pack which is anything but a joke (indeed is far superior to the Highlanders forward pack!).
If we compare their performances during the Rugby Championship this year:
Folau: 6 Matches, 480 minutes, 2 tries, 1 try assist, 69 carries, 498 metres, 7 clean breaks, 27 defenders beaten
Ben Smith: 6 matches, 480 minutes, 2 tries, 1 try assist, 49 carries, 299 metres, 9 clean breaks, 18 defenders beaten
Folau has slightly more metres per carry (7.2 vs 6.1), though this would be expect given he spent the whole time at fullback (as fullbacks should make a lot of easy metres carrying it back.... especially if they don't kick the ball!). They beat a similar number of defenders per carry (Folau 0.39, Smith 0.37), Smith had almost twice as many clean breaks per carry (Folau 0.10, Smith 0.18), though I do believe playing on the wing helped Smith stats in this regard (as if wing is on the end of an overlap they are credited with a clean break even if all they had to do was catch the ball!). I would suggest that their offensive stats during the Rugby Championship are pretty comparable overall, with Folau having a edge statistically in terms of Super Rugby performances.
In terms of defense the difference is quite large. Folau has an amazing ability to put himself in positions where he doesn't have to tackle. You would think given the fact Australia have conceded quite a few tries this season he would have had to make quite a few tackles, but amazingly his tackle count is rather low! This comes down a positional thing as much as anything - in terms of making head on tackles I would have thought Folau would have a slight edge over Smith (who I still believe is still too passive in the tackle at times, though is improving in this area).
In terms of Super Rugby:
Folau: 1092 minutes, 19 tackles, 5 missed tackles (79%, 1.4 tackles/80 minutes)
Smith: 1280 minutes, 69 tackles, 15 missed tackles (82%, 4.3 tackles/80 minutes)
In terms of the Rugby Championship:
Folau: 480 minutes 13 tackles, 3 missed tackles (81%, 2.2 tackles/80 minutes)
Smith: 480 minutes, 20 tackles, 3 missed tackles (87%, 3.3 tackles/80 minutes)
The big thing about Ben Smith is he does the little things that make everyone else perform better. That's exactly what you want in a fullback IMO. Though he had a 'quiet' game against Wales was was heavily involved in 3 of the AB's tries. He ran a brilliant line and delivered an excellent pass to create the linebreak for Coles in Kaino's first try, he made an excellent kick return giving the AB's front foot ball in Barrett's 1st try, and his brilliant aerial work lead to Barrett's 2nd try. None of these acts were exceptional, they we just basic skills executed very well. Folau in contrast has skills that Smith (indeed most players in world rugby) could never dream of, but he is a finisher rather than a creator, and I still think he is learning about the game. For me he still looks like a wing playing at fullback. If I was the Australian coach I would seriously look at playing James O'Connor at fullback with Folau on the wing (along with Speight) next year....
I get that you like Dagg (and believe he is unfairly criticized at times, which is fair enough), but surely you can see that everyone outside of Canterbury thinks that Ben Smith is pretty damn good!