Why do people think Wii Sports Resort will boost Wii sales?

[Ail]

megaman79 said:
I also think there is a clear audience for sport/athletic software on Wii, why else would EA Fit, Wii Fit and all the other crap sell so well.

Wii Music was not a sport game, WSR is. That should indicate a significant advantage right out of the gate.

But EA Sports Active sold 800k units in 3 weeks and hardly gave the Wii any significant hardware boost...