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.
Reduce the Cooldown of Battle Shout by 1.2s.
Increase your maximum Health by 150.
Increase your maximum Ammo by 12.
Heal for an additional 320 after activating Battle Shout.
Your Shield now regenerates at 120% effectiveness, and regenerates even while it is active.