Do you have two eyes and a heart?
Yes. It is a dramatic difference. But I still might pick a refurb iPad 2 for $320 over a iPad 3. But I'd never pick a 399 iPad 2 over a 499 iPad 3.
I like to read a lot of news using tablet/iPad, and the iPad 2 is absolutely terrible due to the low resolution and large screen. The new iPad (too expensive for me to purchase) is however, absolutely stunning clarity. The font can be so tiny, yet so legible.
I serious believe those who don't see a difference simply don't know how to compare two screens.
Honestly, not as much as I expected. When I looked at them at Best Buy, I couldn't figure it out at first glance - once I figured out which was which, I could tell, but it really wasn't as mind-blowing as TheVerge et al would have you believe.
quite noticeable, like iPhone 3G => 4
You need to have used both for a decent period of time.
and a lot of time I had with both. Huge difference between two displays. iPad2's display is simply not legible enough for web reading.