Yep, they'll be almost identical in terms of dvd playback quality. PS3 plays blu ray as well though remember and avi's and so on.
If you want a console for media playback, ps3 wins by a landslide. If you want a console to play games, xbox has the edge.
PS3 for media by far
what's the best setting in the upscaling options in the PS3, and what do they do
If you're interested in streaming to the PS3 I recommend PS3 Media Server, it's great!
what's the best setting in the upscaling options in the PS3, and what do they do