Same Jinbe that clowned Big Mom, was running away from an injured Akainu, while latter bulldozed through everyone including Ivankov, until he caught up to Jinbe and blew a hole through his body. With Jinbe only surviving due to Law's medical treatment.
Same Jinbe is going to beat Jack high diff at max, proving he is the strongest Fishman.
You said overpowering now you talk about running. Overpowering Iva and then? Also Iva was able to stand up and recover from this attacks.
Jinbei was carrying Luffy and running towith him to safety
Stop trying to make yourself look bad.
Skinny BM did what Akainu couldn't do, overpower Jinbei.
Jinbei didn't even need CoA and named guard to block Akainu clean.
Back to square one, where did Akainu overpower Jinbei or Marco or any top YC in direct clash? He didn't even overpower Crocodile too
Sometimes you guys should stop writing stuff that never happened.