Blitz team against han, sailor sakura, af + a 4th supporting character (roshi, mei, yagura) gets owned even with 30k more power.

If you own initiative on par power mei mabui tenten gnw always beat roshi triple healer teams. In general you beat those teams if you are able to control two of their healers every round (with ninjas like fu, rasa or gnw ino) or to apply ignition multiple times per round (roshi, edo deidara, full skillbreaktrough sasuke, etc... ), but yes, is hard.

Roshi, Utakata, Yagura, SB for example should let you beat that team with sb as the 4th prompt move with shield mystery, high combo chase and 10 combo standard attack and clone in front of sailor sakura, so that is your 4th move that makes both utakata and roshi chase proc and you copy on round1 their water main so that you have both healing tips and poison tai and you use the shield mystery after you summoned water main clone.

Another team you can try is hebihime, tayuya, fu, azure fang with neurotoxin, skewering, healing jutsu and poison tai. Hebihime and tayuya mysteries can interrupt their healing mysteries, put two of the ninjas under sleep every round and get boosted by the enemy hits while they won't boost roshi at all since their mysteries are full nin. you just need to control with skewering or with fu mystery the healer that gets left out of control and they'll die by poison without being able to do anything mostly for the whole battle.