smash:
Revolution, as a name, is NOT as staightforward as people think. And contrary to popular thought, IT TOO needs an explanation.
To someone with no prior knowledge of videogames, Revolution could be derived from "revolve" (as in RPM) OR from "revolt". Nintendo obviously wanted people to take the latter as its meaning. But, revolt against what? The videogame industry (everything negative at least, the stagnation, excessive focus on niche 'hardcore', excessive focus on graphical updates...) Casual gamers who see a white box at Best Buy with NINTENDO REVOLUTION printed on it, having never heard of it, are not going to instantly know all of that.
So to understand the full meaning of any product you have to have SOME sort of explanation. I think most people just like the explanation of the Rev better than Wii.