Maybe its just because his timing and execution of delivery is pretty fecking superb? He takes their set-pieces but he still has to deliver the ball accurately. Misleading that pretty much every attack goes down the left aswell.....Seamus Coleman saw plenty of the ball last year, he just doesn't do as much with it as Baines.
I agree he wouldn't have those stats at United though. Anyone who thinks he can't be an improvement on Evra right now is perhaps clouded by nostalgia (not aimed at you Cina, although I know you would prefer Coentrao.)
There are few, if any, that are saying that Baines isn't better then Evra... but for me. he's not a massive improvement at all - and there are still parts of Evra's game that he does better then Baines.