Let's swing it around and say that England had Wales' results this 6 Nations and last. How much credit would other nations fans give them? Let's see:
England are coming off a year when they only beat Italy and Georgia while finishing 5th in both the 6N and the ANC.
England have then played 320 minutes of 6N rugby in 2021 and for 112 of those minutes (35% - more than one-third of the time) they've played against 14 men. Despite this, they scraped narrow wins over Ireland and Scotland with the win in doubt until the final whistle.
The only game in which England played a full match against 15 men, they got two highly questionable first half tries awarded by the ref (anyone else notice Romain Poite telling Sexton on the weekend 'Don't be scared, I'll let you know when time is on' after the ref asked Sexton to talk to his team and Sexton was instead lining them up along the tryline?) and even then, England allowed their opponents to draw level and needed a load of silly penalties by the opposition in the closing stages to see them off.
I'm sure England would get a ton of credit, especially from Wales fans. And everybody would be agreeing that England deserved to be top of the 6N table and if they won the Grand Slam it would be completely unquestioned.