I think there'll be a lot more than just having top gear to doing well in PvP.
Hoping it'll be a bit like wow, if someone just buys their way into good gear and doesn't learn their character it's not going to help them.
It'll depend how complicated things are. But I don't see how gear won't make a big difference. Chances are he'll just bounce up and down between people good enough to own him and people who simply don't have the gear to compete no matter how good they are.