lol...as a fighting game player, I feel where you're coming from, but I can't support MS, especially at launch with there terrible PR and 24hr check stuff they tried. Plus, Sony has only debuted a 1/4 of there exclusives. Still too early to judge if KI will outweight PS4's launch/early launch titles.
Check my user name and you'll see it is hard for me not to impulse buy just because of KI, but I have to give it some time. If it turns out to be the next big thing in fighters, sure I'll jump. But I'm just as eagerly looking forward to what Capcom will do on next-gen with SF, what Seth is doing at Santa Monica and his next project, Namco with Soul Calibur and Tekken etc etc...
This still has a chance of being swallowed in 3-4 months after launch hype dies, and you only last and sale if your game truly has legs and sustainability in this genre. Definitely brings me back, but not enough to buy 2 consoles in a year's time span.