Gunnar may indeed be related to Roy with that chin of his.
But he needs to drop to 155 ASAP. His striking is terrible, he needs to use it to survive while focusing on grapplefucking opponents, which he may be able to pull off at LW. I can't imagine Nelson trying to fight bigger and more effective fighters like Rory, Lombard, Hendricks, GSP, Woodley, etc. They would be massacres.