Their flesh, no matter how strong, could not possibly be harder than the armored vehicles of the mechanoids, unable to withstand such firepower.
This captain of Blackwater City, indeed, needed special attention.
Although his combat power came from human technological creations, being able to use such creations proficiently was a part of a person's combat abilities.
Moreover, unlike ordinary people who could only mount their guns on fixed supports for limited angle sniping, this damn captain could easily carry a sniper rifle as big as a cannon, shooting wherever he pointed, comparable to a tank's gun barrel that could charge at anyone without needing to rotate for aiming time—that was deterrence!
Must be cautious!
As for themselves... they might be able to lift such a weapon, but to say they could move evasively while maintaining precise shooting was clearly unrealistic.