The retina is minimally different on the iPad IMO.
You're obviously entitled to your opinion, but I really do find these statements difficult to digest. I can only guess that not everyone's brain processes visual information in the same way. I've used both iPad 2 (I own one) and the Retina version. Rather than the difference being minimal, it is in fact, to me at least, massive. I hate my iPad. All I see is pixels. Even on a plain background. I would love to get the Mini, but Apple will put a Retina screen in it next week