Will be very hard.
Neither Samsung or Motorola are especially highly-valued brand names. In Samsung's case this is a little unfair as they've been knocking out top-notch stuff for some time now. But trying to sell a product more expensive than Apple without the brand cachet is going to be a tricky job even if it is a more powerful tablet. The best way they could achieve it, is to do a Lexus and come up with an entirely new brand which espouses luxury and an unrivalled experience. It'd be a Samsung or Motorola underneath, but those names wouldn't appear anywhere on it.