wouldn't it be the same anyway, if the image fills the entire TV?
Whether it is the PS3 or your TV that stretches and interpolates it shouldn't make that much a difference, should it?
on a standard definition TV, it doesn't really make a difference, but try playing it on a hi-def TV and you'll see what I mean when I say the anti-aliasing is what makes the game playable...the pixelation is really bad...