Nah Intelligent System is pretty cruel when it comes to GHB but since he's from awakening he will probably be good since IS likes to promote recent games lol
Let's not say that only Awakening GHB units are good, because if we're comparing the GHB units, then that's the farthest from the truth when you're comparing those two to someone like F!Robin.
So is every other unit*
No units are bad, some are just given obvious statlines. Berkut's a great mixed tank but everyone ignored that over his bad Spd and a weird A skill. Slap a def refine, bonfire, dc and quick riposte on him and he'll tank shit like no tomorrow.
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