UIKit Dynamics is pretty cool, and so is Sprite Kit. Two of my favourites.
They are not getting enough credit for that.
They aren't getting credit though because unless you're a developer, no one really cares. Most people want to see changes that effect them directly. That is something that I think Steve had a very good understanding of.
It's not like iOS users can install an alternate browser, either.
Opera Mini isn't a true browser and offloads processing to external servers because they can't interpret JavaScript locally (thanks to Apple's anti-competitive app store rules). The off-device rendering makes for a less-than-desirable user experience.
Chrome and every other "browser" in the iOS app store is just a custom UI on top of Mobile Safari. And it's not even full-speed instance of it since it can't use the Nitro JavaScript engine. It's hobbled so it's slower than proper Mobile Safari. Chrome does add one other custom bit in that it inserts its own network stack underneath it. But it's still Mobile Safari within Chrome. It's not the Chrome/Blink engine and it likely never will be. Not unless those increasingly high walls start coming down.
Android's been out for 5 yrs and it still feels rushed. ;)