Well not only that, but Hayate was never even able to TOUCH Raidou. Raidou evaded all of his attacks. Maybe that's why he's called the God of the Wind...
Contrast that to Ayane who Raidou at least legit guarded her attacks and... yeah.
Plus Hayate doing the ONE thing he knew Raidou came for was like throwing in the towel :-/
And he didn't even redeem himself, Kasumi had to go out there and do it herself. Hayabusa even called him out on it in a few cutscenes. and this was right before he got captured AGAIN in DOA5's lab, and had to get Lisa to free him.
Hayate's weakness is a direct result of Kasumi leaving the clan, and now she's being hunted for the rest of her life.
Zack was pretty much the comic relief in DOA5 but to me, it was Hayate as well. He went around story mode with his arms crossed, acting all edgy and moody like he was too good to enter Helena's tournament, and I'm all dude you haven't done anything yet to warrant trying to be cool.
Kasumi still adores him though but that's because she's supposed to be "angelic'y", and I won't even get started on Ayane. But I guess Ayane is more of a contractual Hajinmon Tenshin support sort of relationship, even if he is her half-brother.
Hitomi on the otherhand is a legit love interest, but I love how he just boderlines abandons her when he gets his memories back.
I hope DOA6 redeems him, and don't get me wrong -- he looks great; moveset, costume, everything.
oh wait, I guess Hayate lended Hayabusa his sword in Ninja Gaiden 3 though. So there's that.