HTML/JS aren't first class citizens on iOS when it comes to API access. You can't take pictures, get reliable sound playback, create notifications, etc.
Of course, there are other things you cannot do on Android even if you are an app. We will actually have lost this battle if all we get is the right to install any app we want (and then everyone loses interest and goes home, which is likely to be what happens at that point): what we need is the right to install any software we want.