This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
Hitting an enemy with Presence reduces its Cooldown by 2s.
Increase your maximum Ammo by 5.
Reduce your active Cooldowns by 40% after getting an Elimination.
Heal for 120 for each enemy hit with Valor.
Heal for 100 after using Presence.
Hitting an enemy with Heirloom Rifle increases your Heirloom Rifle damage against that enemy by 7% for 3s, stacking up to 5 times.