None of the launch games for the PS3 make it worth buying one now for me. Unless the price were expected to go up later, I still wouldn't buy one. Understand that I have a backlog of games to play already, so it would take something special to get me to buy a new system at all. The Wii has that special something.
My absolute peak for paying for a console I really really want would probably be $400. That's more than I've ever let myself pay for a PC video card. Without the new controls to go with it, I probably wouldn't want a Wii at that price even if it did have better graphics. I think I'd be willing to pay $300 at retail for the Wii as it exists. I'd never buy a console off a scalper, though, so that will remain hypothetical.