lol lot of unpredictable and unknown factors.
I'll put the battle like this with lot of generous assumption on the characters:
First analysis of the characters.
Konan, though looks not so dangerous in attack could be very good in defending herself with papers.
Only way that she may be defeated/killed could be Itachi burning away all of her Origami with Fire unless Minato knows Jiraiya's oil jutsu but I am assuming he doesn't.
Kisame could be assumed to know all/most of water jutsus we have seen so far.
Sasori could be assumed to have all the puppets (even the ones he lost in his fight with the 2 kuniochis for the sake of a good fight) he ever had to be in his possession for the fight.
Pein's abilities are mostly unknown and so is the power of his Rin'nengan. I will generously give all 6 bodies we have seen to be in use for Pein in this fight. So that means two of the Pein's power is known.
Fuuma Pein, with ability of summoning with use of seals and "Fat" Pein who can absorb jutsus.
Also, Pein is also well-versed in all 6 elements.
Zetsu is the most unknown factor and without knowledge of his strength, the fight is just wild speculation.
Hidan, you know....immortal dude.
Kakuzo, the one with five hearts (all intact) and I will give him ability in all 5 elemental jutsus.
Deidara, I will give him all ability we have seen in this manga.
Itachi's arsenal's most powerful jutsus can be assumed to seen by us. I will generously give him the ability to use Tsukiyomi twice, Amaterasu once and Susano once without much harm to his sight in this fight. Keep in mind, that he is incredibly fast, expert in weapons (arguably), knows Uchiha Fire elemental jutsus, have variety of genjutsus, probably highly skilled in taijustsus and possibly has good knowledge and usage of many ninjutsus.
Also, remember the ability of Sharingan to copy ninjutsus.
Minato, the jutsus we know in his arsenal are Hiraishin, Rasengan and Death God jutsu.
We can assume that he knows some other jutsus to.
Minato and Itachi wins.