We called Sanjino a Runji but it was Luffy instead...
Jinbe used 4 attacks:
1 of them missed.
One of them was a grip on WW's hands.
One of them was a shoulder throw.
And the last one was a devastating knockout that would have trashed him regardless of everything before.
Surely, you are right about it being a mid diff because Jinbo stood there and tanked attacks unnecessarily but my point remains.
All that we saw is not even 20% of what Jinbe is capable of.
Jinbe would perform better vs Imu than Luffy did this chapter because that was a seriously bad performance.
I dont know why you are surprised about Jinbe being capable of outdoing that...