Comment Oh hell. (Score 2) 155
This is turning into a Big Deal, isn't it?
So, Mobile Safari proper uses Nitro and has seen some good performance improvements. For reasons unknown, these changes didn't make it into apps that use UIWebView.
You don't have to be Nostradamus to see what debate that "reasons unknown" part is going to cause.
1) Apple is evil and trying to cripple web performance so that people buy apps
2) It's a bug and/or simply didn't make into iOS 4.3 because it wasn't prioritized.