This is my experience. I care less about the frame rate and more about the size of the text. On my 29" 10 year old tv the text on the pitches on MLB 2k8 are so small my friends and I had to get right up near the tv just to read them. It's impossible to read the scoreboard in both NBA and NHL 09. It's not my eyes, I'm 21 and have 20/20 vision and this has never happened any other console generation. I've noticed my other games have smaller text than xbox and ps2 games, but with sports games it's almost unbearable.
Even if I could afford a huge HDTV, I'd have no place to fit it.