Only very shallow people think these games bombed. 360 and ps3 games hit their peak in the first month, but that isn't how the mass market wii operates. It is more like the tortious than the hair.
Wii sales tend to be more evergreen. There is less enthusiasm at launch but they pick up slowly over time.
It is a different cycle because the base is bigger, even though the enthusiasm isn't there
Everyone was saying wii music bombed, and now it has sold 2 million quitely. Madworld and overkill may have lost the sprint, but they will win the marathon.