Obvious spamtastic troll is obvious.
You're not Sakurai. No one believes you're Sakurai. You're lucky they don't, because if people believed you were Sakurai you would get the crap flamed out of you (and I would be one of the many doing it).
We've SEEN these updates before. I'm pretty sure all/most of us checked the Dojo daily and saw these updates months/a year ago when they were posted. Even if we hadn't, Brawl has been out for nearly 9 months in Japan, 8 months in the USA/Canada, and 4 months in Europe.
And I don't have a high opinion of Sakurai, but I think that the real Sakurai would be smart enough to realize from lurking the forums for all of 5 seconds how many people hate him, and that publicly announcing that he is who he is would be stupid.