Stormcaller has pretty much the same armor as bladedancer. Downside is they're super isn't an instant kill like arc blade is so you can kill them even if they're hitting you with it. I would say to decrease the sun breaker armor a tiny bit. Sumbreakers have a shit ton of armor but I'd say leave it alone because when Bungie nerfs something because of crucible, it always effects pve a lot. That would be unfair to Titans. Just my thoughts