Define "fine." My BR player upconverts, but 480p content still looks like crap on my 50" PDP compared to HD content.
In any case I really think this is all a non-issue on a tablet-sized screen.
Acceptable, not bad, okay, it will do.
I've watched lots of DVDs on my 43" hd tv and don't really notice the difference in quality if I'm not looking out for it.