Not only does Chrome on iOS sync bookmarks, but it allows you to see what tabs are open on Chrome on all your other devices and what tabs were last open on devices which are currently switched off.
Sync is the best feature for Firefox on Android too, it makes all the other bugs and oddities worth dealing with.
It makes me wonder about how many iPad users have Android phones, or iPhone users with Windows (or even Linux) machines, or iPhone users with Nexus 7s etc., you get the idea, anyone not fully inside the Apple sphere is probably going to get a lot of benefit from unifying browsing across platforms.
Yes, definitely the sync was the feature I have been looking forward too. It's a shame that Apple is taking so long to develop their on syncing (just like they're taking their time developing a lot of thing that could be branded an iCloud service).