I have to agree, I was not blown away buy it, I just looked at a ipad 2 at best buy, selling my 3 and getting a mini!It depends. Many people (including me) didn't see that big of a difference. It was very subtle. Other people have X-ray vision and can detect even the most minute pixel density disparity, to the point the iPad 2 gives them headaches.
Its up to you, you will have to see them side by side and decide.