No one’s missing that - rather it simply doesn’t matter to me if Regen comes in dead last (not seeing evidence if that but let’s assume it’s true). What matters to me is if it’s viable - which it is with extremely modest inspiration usage. And by modest inspiration usage, I mean a level of usage that is reliable and should never require any inspiration planning or purchasing.
Comparing to other sets is extremely limiting thinking when all that really matters is can the character do the job within reason, which it undoubtedly can. Who cares if most other sets are better - we all have dozens of meta builds already, and we’ve arrived at regen for the sake of variety. There’s already enough top tier sets for the meta-builds-only powergamer to enjoy for a lifetime.
Now, I would like to see some more focused survivability testing (insps must be involved for the testing to mean anything to me) with things like Electric Armor and Fiery Aura. Because I’d actually like to see it proven that Regen is dead last. Unfortunately citing Bio, Rad, SR, EA, etc over and over doesn’t prove anything on its own.