J man doesn't solo but you seriously underestimate sanin
A wind mask is going to blow away J man summons? lol even fuuton of a tailed beast was unable to take out bunta. And J man's toads also have oil, konan is pretty screwed and gaara is not far behind. He only caught mizukage's clone because of gold sand of his father. If J man ever get into sage mode sound genjutsu = game over
And then there is Orichimaru who is even stronger than J man. Even without hand seals he was able to take on 4 tails naruto, he was able to tank tbb blast, much stronger than kakuzu's pathetic elements. He is basically immortal and has manda and other snake techs. Hidan isnt going to do anything to oro i mean this guy got sliced in half and still lived.
Tsunade is no push over either. She also has giant summon and she can probably even tank that lighting mask you speak about no problem. She can heal the other two if they ever get into trouble too.
And the other thing is Sanin and team mates who have fought together for a long time. They will have much stronger team work than the other team. Sanin mid difficulty even without edo and oro's hands.
shukaku was no where near full power when he fought bunta,kakuzu's wind mask will blow away jiraiya's summon,or his lightening mask will be even better,he only summons one per battle,he summoned one vs pain,why would he summon more vs gaara?. Besides kakashi took 3 ST's before being put down by deva at full power,gambunta and the toads were sent flying by an ST of a weakened deva,
Konan knows of jiraiya's oil now,she will fight someone else like tsunade,jiraiya can't just spam oil when he is being attacked relentlessly,gaara can also attack the summons feet as well,gaara's pyramid held the mizukage without gold dust because he hardened the sand to such extent that oil couldnt seep through,you know his gourd is herdened sand right?,he can do that with his normal sand in theory. No one is letting him enter sage mode here,there are no sewers or pipes that he can run or hide to enter the sm.
Konan takes tsunade alone with the help of a mask,taijutsu is useless against konan,she can't kill tsunade easily,but can suffocate her by wrapping her in paper and probably having a sand clone help out,her strength is useless if she can't move,katsuya is kept at bay by a wind mask/fire mask,
oro is without edo tensei here, kakauzu with doton skin,immortal hidan and the other masks can keep him at bay. Hidan overpowerd kakashi in a taijutsu/kenjutsu duel despite having his sharingan on and solod the two tails,kakuzu outright manhandled him,they are both quick and strong. Kakuzu can go octopus form as well,together,they have very good teamwork and can hold oro for a while until the others finish up.
