Ok let me clarify,
This build was out of boredom. By no means was I claiming it had any real advantage. Hell I have not actually even tested it yet. I was just throwing it out there. I don't know why you felt the need to educate me.
This is the build I currently use:
http://www.torhead.com/skill-calc#301GMrrdorogzZMcbZb.1
I was merely throwing that build out there as something fun to try for the ezmode flashpoints where 75% of the fights are trash that dies in under 10seconds. As it stands I run most of them with a Sniper and an insanely geared Marauder so I find myself not doing much other than tanking the occasional gold elite/boss.
I know the endurance does not make up for the mitigation. I knew even throwing out the word "slightly" was a stretch.
As for the GAJ argument, obviously if you're stunned for several seconds it would not make a difference. I was more thinking toward the constant knockdowns etc.--"stunned, immobilized, knocked down, or otherwise incapacitated." Since I find myself being knocked all over the place at times, I was just toying with the idea that, if this procced off damn near everything, would it keep my heat low enough so that I could in fact, spam abilities such as Flame Sweep that would otherwise send my heat through the roof.