As far as Smash Bros. goes, Mercury said that Nintendo sometimes consider the franchise as a “dangerous” brand. On one hand, Nintendo knows that every Smash Bros. game will sell well- but on the other hand, it associates their beloved characters with violence. Mercury remarked:
Unlike most other fighting game characters, the Nintendo mascots have far-reaching brands and franchises unto themselves that have to be considered and protected in a bigger picture view. EVO would have taken the character representations out of the hands of Nintendo’s control, boiled them down to pure violence, and broadcast it directly to 125,000 people. It’s not hard to see why Nintendo would be a little gun-shy.
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Ex-Nintendo Employee Discusses the Smash Situation at EVO 2013 « Nintendojo.