The point of your argument still seems to be that the fact that the PS3 is hard to program for implies that it's more likely to have good games, and I don't see the logic behind that.
*Sigh* Those who will take the effort to make a game for the PS3 are more likely to take the effort to make a good game. This applies to almost anything. If you're willing to take the time to say... research everything for a report at school, isn't the person who is willing to take that effort more likely to take the effort to make sure they didn't make any grammatical errors? Isn't the artist that's willing to use the inferior pen if it's all they can get more likely to be the one that's truly dedicated to what they're doing?
If a person is willing to go the more difficult way to see a something be what they want it to be (In this case, they want it to be for the PS3), instead of giving up because it's too difficult, wouldn't that be the same person who wouldn't give up on other things (In this case graphics, story, controls etc.) because they seem too difficult?
If someone is willing to spend the time, effort, and money to make a PS3 game, they are probably willing to do the same with the game in general.
EDIT: Not to say that the Wii won't have good games. It's just that a lot of them will be shit, with far less good ones than bad ones. Most of the good ones will probably be developed by Nintendo themselves, however, because Nintendo is dedicated to making good games for its system, and isn't just putting the games there because it's cheap.