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.