Originally Posted by
Argyle_Darkheart
I don't think that's the best comparison. Sheltron can only be used to increase your DPS if Shield Swipe is off coooldown and if you would otherwise not proc it; TBN isn't gated like this (though it is gated, however little, by incoming damage). As for taking avoidable damage, there would little to no need for that when you can just cast TBN on someone else.
Would it be a huge issue if TBN was DPS positive? I don't really know, but it makes sense for it to be DPS neutral. The "issue" is that isn't, though I do think it's close enough.