I was at the Apple store today and my friend who works there wanted me to do a video of the iPad 2 running 4.3 compared to the original iPad running 4.2.1 while loading www.nytimes.com. There is quite a difference because 4.3 has some sort of new Java engine, according to my Apple store employee friend. Here is the video of him running the comparison.
http://www.youtube.com/watch?v=NATGH98rxdw
http://www.youtube.com/watch?v=NATGH98rxdw