If they are going to insult the userbase a boycott would be effective, if done effectively. What it would require is the massive number of devoted fans who ere offended by the comments to point that out to as many people as they could. But you would have to boycott all of their Wii offerings, in order for them to get the message. It would also take the said 360/PS3 owning Wii fans to pitch in.
If enough internet nerds get together and voice their opinions, big companies will pay attention, it works all the time. Ubisoft maybe dumb and thick but they can't ignore the fans if the out cry is too vocal, based on their reaction so far with shutting down the forums say they realized how vocal fans can be. If they think it will go away, they need to be proven wrong. Politicians don't get away with **** like this, they **** up there is always someone there to remind the masses of said **** ups.
But we are not talking a boycott of just Wii games, it would have to be all inclusive, Wii, DS, 360, PS3, then they would get the hint. But it would take more than a boycott, we need to remain vocal about this.
Coming out and saying the Wii is under powered or taking a shot at Nintendo is fine, whatever, but taking public shots at the entire userbase and making generalizations is dumb on all levels.