Like I said he was up against two Yonkou with the rest of the team and is now half dead. He literally only hurt Kaidou once. 😭  he tried to cut kaidous neck and it did no damage. His strongest attack didn't even knock Kaidou off his feet. So apparently asura is weaker than Luffys ryou.  Regardless Zoro got much stronger out of nowhere. He's had like 2 fights since losing to the yetis.
		
		
	 
 Yes because once again he ALONE blocked the strongest attack in the series so far 
Something none of the other 4 luffy included could do. 
He used no haki for that. 
His second attack a yonko screamed at another yonko to dodge it 
And thats just zoros coa 
Pre acoc zoro made a yonko scream at another yonko to dodge 
Then he saved luffy again and cut kaido with tatsumaki 
Knocking kaido down is irrelevant 
Scabbards did that and kaido said they don't have enough power to open an old wound let alone make a new one like zoro did 
And zoro did that pre power up with a broken body