I
That's one of the reasons why people have been calling for him to fill in at centre, I guess. He's actually not that fast for someone in the back three - I notice that he's rarely able to save a try once an opposition winger or fullback makes a linebreak (although he always tries his best), and it's probably one of the reasons why he doesn't score as many tries as you would expect for the amount of linebreaks he makes.
According to
www.rugbystats.com.au (I'm not sure how accurate they are), he made 13 linebreaks (2nd only to Gear with 14) but only scored 5 tries (joint 13th). Although the most telling stat on that website might be that the Highlanders have three players in the top 15 linebreakers (Gear 1st, B Smith 2nd, Poki 9th) but none in try assists.