Kakashi vs Asuma, Kurenai, Shizune and Anko.

[Icelerate]

I agree, that Suiton that took out Zabuza, Giant Vortex Jutsu would wipe out these jounin.

OP: Kakashi wins this low-mid diff. Zabuza can even beat these guys 1 v 4

Nah, Zabuza>=Asuma so adding fodders tip the battle in Asuma's favour.

 

[pateuvasiliu]

Zabuza isn't beating Asuma.