This is ridiculous. Of course I hope it is going to work best on the MS Tablet. Why not? It'd be a fail if it wouldn't work best on their own OS. There is nothing whatsoever wrong with that, in fact, it is called decent engineering. And if e.g. Apple does not want to provide the same access to iOS as MS has to Windows, it will not work as slick.

Also, I heared Apple is leveraging Safari on iOS, where is the law?