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.
Increase your maximum Ammo by 15.
Increase your maximum Health by 300.
Reduce your active Cooldowns by 16% after getting an Elimination.
Increase your Movement Speed by 24% for 3s after activating Battle Shout.
Gain 12% Lifesteal.
Increase your Attack Speed by 40%, but reduce your damage-per-shot by 25%.