How on earth could there be shortages. Nintendo knows the importance of this title. The game was pushed back a month. AND The game doesn't have an aligned Ww launch. Seems like those 3 points confirm the 'no shortage'.
I guess the only reason why SSB:B could have been pushed back was that the testers though some characters needed some 'tweaking' in like strengh, skills, diversity etc... To get a better overall balance in the game.

THE NETHERLANDS







