For people who want to play on the go, great there's PSP. I have no problem with that, the more people that can enjoy a game the better.
The "PSP version may as well not exist" is relevant, because if you're a Wii owner, then really what harm is it that some PSP gamers are playing the game too? It's kind of a silly pretense that you'd turn down a perfectly good Metal Gear game or something because of some stupid "rule" that Wii games have to be 100% original or can't exist on the PSP also.
The PSP software market is largely irrelevant in the West anyway. People harp on the Wii for going through droughts but I have friends who haven't touched their PSP since 2005 when they realized it wasn't the second coming of the iPod that Sony hyped it to be.
