Yeah, Gerald is pretty insane. I can definitely see it. The damage return on SoR is simply ridiculous. For instance, Gerald alone can basically take care of all your Phantom Knight problems in the Blackburn campaign, totally freeing your assets to build mostly physically damaging tower rather than mages.
Also, you’ve made jokes about how unlucky you are before, but now I really believe you. When Gerald is Level 10 when I play him, SoR activates literally constantly. Here, Gerald got down to critical HP twice. This also speaks volumes about his true potential.