It's not the amount of sales it's the fact that in the "oversaturation" of fighting games two niche game still managed to be successful (a new indie IP and franchise that has never sold that great) yet the game with two of the biggest names in the genre is flopping.
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http://i43.photobucket.com/albums/e373/Gaiash/KumaVsZangief.jpg
LOL!!!! I hope that's a joke....names don't get more n00bish than that