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.
Gain 20% Lifesteal.
Increase your Healing received by 6% while your Bulwark is active.
Generate 4 Ammo after activating Battle Shout.
Increase your maximum Health by 450.
Increase your maximum Ammo by 15.
Increase your Attack Speed by 40%, but reduce your damage-per-shot by 25%.