You can also twist the stat of chance creation saying ManUtd have higher caliber players and the game flows more through them and we don't depend on LB to whip in cross everytime.
I agree stat won't reveal complete story but Baines is not lot better than Evra as mentioned many times here (after poor 1 nad half season people can't see what Evra brings to our team), Evra is superb in the air and with Rafael and Baines as our full backs there are more chances that we will be murdered aerially and for sure if Vidic is not playing.
I don't think we need a Left-Back, but if we can get a good price for both of them together (Fellaini + Baines) I wouldn't mind too much.
Personally I'd rather just go for Kondogbia and forget both of them. But that's for another day
