Don't WWE always say in Championship matches, the Title can only change hands via pinfall or submission? Obviously a KO win a normal match is a regular win, just like a DQ win or a countout win is, but if you win by KO in a Title match, do you get the Title?
When they say that, what they mean is that you can't win the title via DQ or countout. They don't mention KO's because NO main eventer, hell no one but pure jobbers lose by KO, ever, it's just not a way that they end matches because it's anti-climactic, plus getting KO'd makes you look weak. Theoretically, if that happened, they would have to give him the title. How do you keep the title if you've been beaten into unconsciousness? Getting knocked out would become a heel cliché to scrape by with the belt.
Besides, I don't think it matters because in a HIAC, they probably just wouldn't count a KO and continue it until there was a pin or submission.