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 a player with Revolver Heals you for 75.
Heal for 60 after hitting at least one enemy with Defiance.
Heal for 80 after activating Nether Step.
Generate 3 Ammo after activating Nether Step.
Heal for 30% of the damage Absorbed by Reversal.
Reversal always fires back and does an additional 800 damage.