User blog comment:A Wikia Contributor 9337/Heavy build explanation/@comment-27374562-20151222012552/@comment-27374562-20151222140740

Xman845 commented on another page (helping me with my Heavy Build) that he had done "extensive research" and that Crit Shot doesn't boost according to HTL-boosted Damage; it just boosts according to the Weapon's pre-HTL Damage (after Deadly Aug, of course). I had about 15 points in CS at the time on my Heavy, and what he said seemed to pan out. Plus, what I've read here on the Wiki. Obviously, do your own testing, but those 11 points in CS would probably be better spent somewhere else when HTL is 20+.

5 points into Fast Movement means you could be fine with just RED 10** Sprints with max MA (that would put you at around 37% Speed, which is more than fast enough for a Tank Heavy with even 1 point in Concussion). That would free up a slot on your pants for something of more defensive value than MA. Likewise with FR -- it could support your Titan Gloves, but make Nimble less important. Remember, your biggest defensive threat is bosses; you don't have to be that fast to deal with most of them if you're combining Concussion with a high RPS weapon. My Heavy can run circles around enraged Savage Devs with his max OC Flamethrower, 4 Concussion and 37.50% Speed. It may take him a little extra time to reload, but that's what hi-Cap heavy weapons like the Prop are good for.

38 HP/sec. isn't really that much when 1.)You're a Hundo with 15,000+ HP, resistances in the 80/60/60 range (assuming you don't have all BLACK Armor), and maxed Tough Body; and 2.)if you have a very efficient Bio weapon like the Shocky or Tempest, which can regen FAR in excess of 38 HP/sec. if Aug'd, buffed, and applied properly. Tissue Repair slots would be better spent on Body Fueling, especially if it means getting your HP above 20,000 by Level 100. That much HP plus what amounts to effectively a 98% Damage Reduction (at least from Physical attacks) and a good Bio weapon means your Heavy can survive pretty much ANYTHING.

Concussion and Brute Strength, yeah, I can see those being personal preferences based on one's style of play. The points spent on Crit Shot, Field Supplies, and Health Regen are, just in my opinion, what hold this back from being a truly optimal Final Build.