Well I know the anime & manga don't have everything in common or the movies for that matter but in one of the movies there was one samurai... he was pretty damn good against ninja.
also
Samurai are held highly in Japan... I doubt Kishimoto would let Mifune (witch by the way is famous actor that was well know for samurai movies in japan) die being as this is the 1st real ninja vs samurai fight some body as to make a name for the samurai
If Mifune does die i think it won't be Hanzo by him self... Kabuto has no honor so if Hanzo starts losing I think Kabuto will bring in Kimi and Chiyo but never count out the other ninja
All and all its gonna be one damn good fight with my money on Mifune just because Samurai are kick ass
also I joined this site just to comment on this thread

(been reading manga here for a long time but never signed up till now)