Maybe its my eyes.. but I have to say I have to look hard to see a huge difference between the screens.
I have an iPad2 and went to BestBuy ready to get the iPad3 because my wife wanted mine.
I compared and compared and unless I am looking at photographs that have been zoomed in I really cant see a huge difference. Even websites unless I enlarge the letters I cant tell that much difference.
Sure its nicer but to say "wow" or all the hype that Apple is putting in I am not sold on it.
I can actually tell the difference MUCH more in the iPad3 camera (although I have yet to use min on the iPad2 in real life)
Also I do notice the extra thickness and weight.. i am sure unless you are comparing specifically you will not notice this after a while.. but then again I think its the same for the screen