Interesting. So, with no Armor you have 188 Health. I would normally think that 190 is the lowest but Hawkmoon, without bonus damage bullets, can 2HKO to the head, each shot dealing 94 damage, for a total of 188 damage. With maximum, you seem to have ~210-212 health, as evident in the video when he takes 209 damage and has virtually no life left. With a couple of points of armor, Hawkmoon (Unlucky)/Timur's Lash no longer 2HKO you to the head and take 3 shots and Shadow Price style ARs, which is the majority of them, go from a 7HKO to an 8HKO. After this, there are few benefits to having higher Armor; most everything is the same in terms of shots to kill. The only notable things I can think of at half Armor and above is that Aries Nemesis type Scout Rifles need all headshots to get a 3HKO instead of two and most Hand Cannons (Devil You Know/High Fixer/Fatebringer style) need two headshots to 3HKO instead of one. Most guns are not affected at all, even by one bullet, if you land all headshots. Hand Cannons still 3HKO. Maximum Impact Scout Rifles still 3HKO. Any Scout Rifle with lower Impact still 4HKOs. Maximum Impact Pulse Rifles still 2BKO. Medium Impact Pulse Rifles still 3BKO. The only real changes are in how many bodyshots you can get and still hit the optimal TTK and even then, it only ever takes one extra bullet at best. Some guns, like Sniper Rifles, see no changes at all. Max Armor or minimum Armor, you will die in the exact same number of shots every single time. The higher the Impact of the opponent's weapon, the higher the chance you're not going to see any change in the time to kill.