I noticed the same thing with my Evo LTE, and my friend with their Galaxy S3.
Regarding the screens, I noticed more pop on the S3 vs. the Evo, mainly (I think) because I used an Epic for over a year and really liked that screen. I also had a background on my Evo that was pretty plain and mostly white. I changed the background to one with a lot of colors and wow my screen pops too! lol