I obviously tried it before commenting, but props to you for implying a statistically possible situation of me being a troll. Well I'm not :P
Chrome works slower and that's a fact. Its keyboard is custom, but inferior to Mobile Safari by far. Its syncing options are superior, but all in all you cannot say it's better than Mobile Safari. Unfortunately, you cannot say Mobile Safari is better either... But not being able to set Chrome as default effectively renders it useless.
I've been using Chrome in iOS since it went on the App Store yesterday, and so far not being able to set it as my default browser doesn't seem to be holding me back too much. It replaced Safari on my dock, and my browser is usually within a single swipe on the multitasking tray at the most. Sure, you'll be thrown into Safari here and there, but that's the case for Mail as well, and I can still enjoy Sparrow.
Chrome works slower and that's a fact. Its keyboard is custom, but inferior to Mobile Safari by far. Its syncing options are superior, but all in all you cannot say it's better than Mobile Safari. Unfortunately, you cannot say Mobile Safari is better either... But not being able to set Chrome as default effectively renders it useless.