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.
Heal for an additional 240 after activating Battle Shout.
Increase your Movement Speed by 16% for 3s after activating Battle Shout.
Increase your maximum Health by 600.
Increase your Healing received by 18% while your Bulwark is active.
Increase the Health of your Bulwark by 600.
Increase your Attack Speed by 40%, but reduce your damage-per-shot by 25%.