Zoro has human durability where shanks loses his arm to a fish.
Why are you talking about Shanks? Also that was editor choice in a much simpler one piece world.
What is human durability?
We have seen BB stop S-Hawk slash with an Arm Coated.
Big Mom skin was unpierceable in WCI, until it was retconned to have Kidd & Law win.
Zoro can just use his Haki to shield from the damage of the laser, just like he did with Hakai..
Why would he not do it..