I saw the same or a similar video earlier - kind of pointless in general, but especially so without some kind of motion. SidexSide as a thumbnail is kind of irrelevant, pretty much anything is going to look half-decent. I would expect the iPhone 4 to look just about the same.

This is better, from PCWorld: http://www.pcworld.com/article/241955/smartphone_camera_battle_iphone_4s_vs_the_android_elite.html