He draw less blood, Zolo literally said this:
That page is suppose to be the cool return for Zolo, so I guess thats why they did that to make him look like he cut him, they show the blood but still the next page we see Alber had 0 blood;
So where all the blood go in the next page? Because the blood Zolo draw is much less than Marco's.
Alber wasn't bleeding in the next page after Zolo's attack, but he was bleeding in the next page after Marco's attack.
Much less blood than Marco's attack, because Alber wasn't bleeding from that next page.
But Marco's attack bleed him in the next page.
He didn't beat Marco doing 1 v 2 with Alber+Queen, Alber wasn't bleeding in the next page.
After Marco hit Alber, 1 page passes, and we see Alber is still bleeding;
This is page 17
This is page 18
While next page, there is no blood on Alber after Zolo hit him.
Alber was bleeding pages between 17 to 18.
Alber wasn't bleeding in the next page after Zolo hit him.
And also, Marco was doing 1 v 2 with Alber+Queen, Marco still did more damage despite 1 v 2.