As games get even better looking the PS3 is really going to struggle, it's GPU just cannot keep up with the 360's and we're in a generation where that is more important that any raw CPU power.
I honestly can't believe anymore it's down to development issues rather than just simple old technology constraints. Whenever I tell people that the PS3 cannot possibly be more technically capable than the 360, this is all the evidence I need, and there's still no proof showing otherwise.
In the end it's all down to the games.