Let's cut to Crazzyman's agenda. The fact that he calls people who buy Mario to be "Marioboys" means that he probably is not a Mario fan. (wild guess)
Anyways, his point is that everyone who wanted to buy a Wii already has one (or will get one very soon).
Therefore, Wii sales will plateau and well sell close to 0 units per month after it hits ~ 20 million, since the GC's lifetime sales reached ~ 20 million.
Meanwhile, PS3 sales will skyrocket up to 100 million because of games such as: **insert Sony Franchises Here**
That about sums it up right?
Oh and since sales of SMG and SMS are about the same right now, these numbers correlate quite nicely and spell DOOM for nintendo's "wii toy." Though we convienently ignore the fact that even though SMS sold 5.91 million units lifetime, almost 75% of the GCN population didn't own a copy of SMS.
So even if we assume that every marioboy that wants a copy of SMG will get one along with his Wii, that will only account for 5.91 million Wiis. How do we account for the 75% of Wiiboys out there who aren't playing Mario, but still own the console anyways? Is it that 16 million people out there got caught up with the fad. but then forgot to buy Mario?