Overall mean nothing in this game. This is not even a matter of how difficult it is to beat the AI. It's a matter of how well the AI cooperates with you and yes, sometimes you have to let the AI hit you on purpose, just for that WWE match experience.
The 3 match types that wwe 13 has - the quick, normal and 5 star is the most excellent stuff I've seen added because as I said, this isn't a matter of how hard it is to beat the AI, it's a matter of capturing the right match type depending on the competitors.
BTW, the creation suite is awesome. Transparency is back, which means better tattoos. I can speak for myself on this, but I spent ages on the painting logos mode drawing tattoos and pants designs for my CAWS and I really, really enjoy it. I am glad to see it expand in wwe 13. For all I've seen, this game is awesome. WWE 12 had the right foundations no doubt. (my view.)