Honestly, it doesn't make a difference mate. Don't quote me on this but I remember one of my clanmates saying Guardians have 200 health points. Agility and recovery focuses are the only ones worth using in PVP, I think armour might only reduce the flinch from being shot. It definitely doesn't give you more health (as it should).

Found a reddit thread and video. Looks like: * You have about 190 health, and get around 20 more from a maxed Armour stat (10%) * Your recovery at worst is around 7 seconds before regen starts. This drops by about 2 seconds with a maxed recovery stat (40%) * The difference between max and min agility is around 10% on your speed, likewise to your *first* (non-boosted) jump. No metrics though for strafing or walking while aiming. Have to say, that's less effect from Armour than I realised, but it explains some of the disagreements I have seen on if Thorn kills with 2 headshots or not. Thorn headshots do 82 damage, with another 42 points from DoT. If you max armour, you go over 206 health, and it won't kill you. If you don't, it will.