That's interesting, because I have not touched my iPad since getting a Nexus 7, except to test websites on it.

I use it for reading ebooks, some browsing the web, reading email, managing my calendar, and very occasional casual gaming. It's fast and responsive, and as far as seeing it, the display is sharp and bright. It's not an issue (which is saying a lot--I'm legally blind).

The display and responsiveness are no better than the iPad, and the retina display on the new iPad is a bit crisper, but I prefer the 7in form factor (lighter, easier to hold/use with one hand) and the customization options that Android offers over iOS.

I know Google had a lot of problems with them initially, some of which effected performance and display... maybe you got a dud?