I'd love to have a tablet with those specs, but the games aren't there for it yet.
For the games where it would benefit, Crysis, Skyrim, MoH etc, touch controls are non-functional, so you need to have some form of controller. The $250 for the add-on for the Razer is a bit much.
Of course an XBOX controller will do the job, but with only one usb port, and the dongle, you are taking away the ability of holding the tablet in your hard to play, and then the difference between that and a laptop of similar specs is mainly the price. Laptops with those (or better) specs are cheaper.
The video card, while dedicated, is due to power usage considerations for a tablet, not the best nVidia available. Of course it offers considerably better performance than the integrated stuff the others have, it is not capable of running games at 1080 with high quality settings. With the screen running at a lower resolution, the actual visuals of the games can be a bit nicer that way.