I think he can definitely with prep time. Kakashi and zabuza skills do not match up perfectly together. People who saids that kakashi will use Kumai, he will have to focus on the head and he can't even use kumai more than 3 or 4 times. I think he said he can use chidori 6 or 8 times but that doesn't count really because if he uses kumai once then I think that he will only be able to use chidori 2x. Zabuza has only been shown to be adept in his mist justu and that he can take leathal hits.He couldn't beat both of them at the same time
Jiriaya can summon toads, he can use that barrier justu to see if anything is incoming, and if he gets the chance he can go into sage mode and don't forget ma and pa.