If King has not used his hybrid mode that means that he is not being pushed to his strongest mode and he's not fighting anywhere near his highest level. The last time we saw Marco he had a few bruises which means he's being pushed to a higher level than King.
Semi serious attack? Really? You are going to claim 2 Yonkos using the strongest attack we have seen from them and the strongest attack in the entire manga is them being semi serious? Come on now. That's the BS I'm talking about when I say people try to downplay Zoro's strength. That attack was designed to kill all SN and Zoro was the only one capable of stopping it on the roof.
We have seen Katakuri powers and strength he is not at Zoro's level. He wouldn't have been able to stop Hakai. Marco it's great at taking attacks because his devil fruit heals him. That doesn't mean he's good equally good at stopping attacks.
What you don't seem to understand is I'm not basing Zoro strength just off blocking Hakai. I have noticed that for some reason people think when I start talking about Zoro strength all I'm looking at is Zoro stopping Hakai and scarring Kaido. That is wrong. I'm looking at everything Zoro has done on the rooftop, his feats and the power required to achieve those feats and how else it can be used.
Blocking Hakai required a large and powerful barrier haki. They same power could be used to clash with Kaido just like Luffy did because if Zoro can create a large and strong barrier haki to clash/block hakai then he could create smaller weaker ones to clash with weaker attacks. It's the same with asura mode. We have never seen him use that mode and then run out of energy which means is not a mode that he's limited to just one use. If Zoro, heavily injured and in poor condition, can best Kaido with asura mode the Zoro in a better condition would be able to do the same and use that mode more times and longer.
Marco has been fighting in the entire war my dude, holding back Queen and King, clashing with Big Mom and so forth.
You have not even seen King btw, so it´s baseless.
yes semi serious. The attack was done to cover as much AoE as possible but those were not even remotely both of their strongest attacks. Neither of them even used Haki. AdvCoC is far stronger on an individual basis.
Luffy would not be able to stop Hakai either, he has no weapon. Both Luffy and Katakuri can dodge though and deal with it differently.
Luffy can´t stop a King sword attack with his body either.
Already addressed this point.
Dude Asura, by Zoro´s own admission, was his strongest attack, and it barely gave Kaidou a scar.
Meaning this is all equally baseless and something you hope will happen.