Ah, I see what you're getting at. It's still an asymmetrical gameplay experience. The competitive games in Nintendo Land, for example, tend to match the gamepad player against the 1-4 wiimote players. Both sets of players have different views and advantages (including hidden information), which you can't do with the Wii (at least, I can't see it done on the Wii).
But again, it will all depend on how developers decide to run with it. These games could end up being the exception, rather than the rule, though I hope that's not the case.
What game did you play at the store?