You are literally the only one that doesn't get it, so let me try to explain it to you in basic English.
Both mid/low diff are in comparison to rooftop feats only. Literally everyone understands this, but you.
I can tell you are not a native English speaker..... but at least put some more effort reading the thread before commenting
Okay I get it now. Don't blame me for your mistake of doing a survey. Still doesn't make sense having 3 options. You have 3 options at survey and 2 scenarios at thread. It was your mistake that I took so much time to get it.
But it still doesn't make sense unless you think Zoro mid diff King is more impressive then rooftop feats or if you think Zoro can't even high diff King after his rooftop feats. Both cases are absurd to me.
As you say(I guess it was you) low diff King would be Yonko level. Oden is pretty much Yonko level. Oden made 2 scars and knocked down(I believe wasn't a knock out) Kaido. Zoro left 1 scar using 3 sword(maybe Enma only?) and Kaido didn't even got on his knee. So yes low diff to that Zoro would be too much but mid diff probably acceptable. Although I would like to see how Oden would handle Hakai.