Guys, lets take a look at some games for the Wii:
Carnival Games
Link's Crossbow Training (w/Zapper)
WiiPlay
Umm.......those games were all sold out for a while after their release. In fact, I was luck to get Zapper/Link and Wiiplay on launch days, becuase they sold out of WiiPlay preorders and didnt take Zapper preorders. I got there as soon as the truck arrived for the Zapper, and had to check multiple stores for Wiiplay. I never bought Carnival Games, still not sure if I want it (i want the claw machine, but i also own a real claw machine).
My point? BRAWL WILL BE MORE POPULAR THAN WIIPLAY, LINKS CROSSBOW TRAINING/ZAPPER, AND CARNIVAL GAMES. IT'S GONNA SELL OUT.