Notice when after Oka goes with laser gun on Nuri, he blows up, and then from one piece he still steps out - Oka points two hand lasers on him, and Nuri seems doesnt affected at all, thats why they went to hand on hand combat.
Anywayz, Nuri is learning and adopting, only new kind of attacks work on him. Better the gantzers put him down faster, before he learns too much.