Sorry that I have no detailed list of features or misbehavior of other browsers and/or extensions, but to name a few: gestures that do not suck; tab menu has useful options like duplicate, mute, etc; click on an active tab scrolls up (like iphone); consistent theme; useful right-click menu on pages; extensions that can extend that menu.
It also has few bugs for too long, like thumbnail generation on bookmarks, and once they made a release that just ate 100 cpu and was unable to start. I switched to firefox yet again to get tired of it and get back once they fixed in the next update.