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 your active Cooldowns by 40% after getting an Elimination.
Increase your Movement Speed by 8% for 3s after activating Battle Shout.
Reduce your damage taken by 8% for 2s after hitting an enemy with Commander's Grab.
Gain 16% Lifesteal.
Increase your maximum Ammo by 12.
Increase your Attack Speed by 40%, but reduce your damage-per-shot by 25%.