Every thread I read that you post in comes out the same - Yoseikan is the real deal etc etc etc.... From what I have seen, modern Yoseikan Budo has Nothing to do with Aikido. It's cool, I really like it in fact, but I've been teaching Aikido for almost 25 years, have studied several other arts incl. BJJ, and it is not Aikido anymore, from the clips that I have seen of the demos and competitions. This is not a bad thing, but Aikido is indeed something else.
Let's face it, Aikikai methodology is for love and peace, not for fighting. Aikibudo methodology is for fighting when you have to, that's the difference.