In an interview, Katsuhiro Harada the creator of the Tekken series talks about why he believes Nintendo selected Namco Bandai to develop the next Super Smash Bros. entry. Harada touches on his experiences with the Tekken franchise that he believes makes him qualified for the job. He also mentions that behind the scenes, Nintendo and Namco have been developing a relationship.
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If the powers that be feel this isn't newsworthy then feel free to delete it and I'll re-post it Yuki's Smash Bros. thread.