if we exclude the use of deidara's final move then i can see kakashi winning this.. especially if kakashi has the use of the sharingan..
however without the sharingan and if deidara can use his C0? ability it think it was then i dont think kakashi and zabuza have a counter..
not to mention without sharingan then deidara can use his microbombs and kakashi and zabuza wont know about it..
EDIT: forget the above xD i misread..
Deidara wins this .. without sharingan none of them can see his microscopic bomb tech and can just erase there existence.. even with all of kakuzu's hearts if he doesnt no the attack is coming then he will die..