Apple has restricted some stuff in WebKit but I don't think anyone would argue that they did so to weaken it. For example you can't (or at least couldn't in th

Apple has restricted some stuff in WebKit but I don't think anyone would argue that they did so to weaken it. For example you can't (or at least couldn't in the past) use position:fixed in Mobile Safari, and overflow:scroll was relegated to a two finger scroll that no one really knew about and is/was a little intuitive (I think they've fixed this with iOS5 though).