Zoro has enough AP to in one shot big mom .

The hard truth is big mom is not top tier or weakest top tier in one piece .
He doesn't. Again, if you think the idea of current Zoro one shotting Big Mom ever crossed Oda's mind you're completely deluded. Big Mom is obviously a top tier and her whole character and role in this story don't work if a subordinate like Zoro can just "casually" defeat her with one slash even though two top Worst Generation captains had the hardest time ever just pushing here out of the island for good.
 
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