I don't know, the way a lot of stuff like was handled like the tiny notification center tab and the janky multitasking gestures just don't feel fully baked yet. Pulling up or swiping with 4 fingers was no where near as responsive as my 4S. I know its a nebulous statement, but iOS on the iPad definitely does not feel "done" to me. It has a little too much iPhone in it still.
I can't really articulate exactly what I expect down the road, because if I could I would be working on UI at Apple. They forked iOS. Obviously its not something as drastic as the kindlefire version of android, but there are still two version of iOS, and the version of iOS on the iPad definitely still feels too similar to the version on the iPhone. There are a lot of subtle tweaks facilitated by the larger screen and I expect even more differentiation down the line in os 6 and 7. Its a come a long LOOONG way since the version of os3 that it released with, but it hasn't come far enough IMO.