I think that is at the core of this issue: Apple feels Samsung copied the iPhone experience, without any effort or even vision on Samsung's side on how to create this experience. Blind copying so to say. So Apple wants to sue them on look and feel, but they can't; what I remember from the Microsoft-Apple litigation about look and feel is that it turned out that look and feel is almost impossible to patent and defend. That is my explanation on why Apple is now suing over their obvious patents, because they cannot sue over look and feel.