How much sales potential does the Wii really have?

[theprof00]

thanks silicon.

I can almost guarantee that wii games sell more in what you describe as the "legs". In most cases a game will have sold better on wii than on the HD consoles, especially later on in the life cycle of the game.
It's too bad Wii doesn't really have any yearly installment sports games, because it would be interesting to see how well last years game continues to sell even with a new iteration on the shelves. My guess is that the more casual base would care less about up to date stats and features and more about price and just the fun itself.