As I had already mentioned before, the pros and cons of Win8 are fair game. But for an Android comparison I suggest to start a new thread. That is certtainly an interesting subject, but here it distracts from the essential points.
My position is what Microsoft has revealed. Win8 is a mobile OS (Metro) that runs the Win7 desktop as a virtual task. Thus, one can take this Metro mobile OS and place it in ARM tablets (sans desktop) and it works. Now, the question that you need to ask yourself is if you want to have a mobile OS, running full-screen apps with peculiar multitasking, to run the Win7 desktop as a virtual task. Wasn't this the core of your question?
So, my question back is why would you not want an industrial strength desktop OS that can run the Win7 desktop as a virtual task? Why would you prefer Win8 instead of running Win7 as a task under a Linux Distro? Or under OSX? Wouldn't OSX be better than Win8 if all you want to do is run Windows applications? Or are you so invested in Metro apps that you need to have Win8?
I think that this is a fair question and very pertinent to your original question.