http://www.noobmeter.com/clan/eu/rwpQ. What is the performance rating?
A. It is a calculated value assessing the player skill, based on an assessment of the tanks the player is playing, the damage dealt and the win rate.
Q. How is the performance rating better than efficiency rating?
A. It is a more accurate assessment of player skill, as it focuses on two values which are hard to boost together - damage dealt, and win rate (CW/TC can boost win rate but will lower damage dealt). A player generally cannot improve these two values without directly helping his team, thus there is no way to selfishly inflate the performance rating values.
Q. What are the issues with efficiency rating?
A. Efficiency rating is flawed in many ways and allows players to boost it if they focus on simply doing things which increase the efficiency rating.
In particular, it over-values capping and initial spotting, and players who mostly worry about efficiency rating ruin games for others by 'ninja-capping' or 'suicide-spotting'.
Q. What are some general guidelines for evaluating performance rating?
A. In general, although these may be reevaluated later:
Less than 1150 - bad player
1150 to 1250 - below average player
1250 to 1450 - average player
1450 to 1750 - good player
1750 to 1950 - great player
1950 to 2000 - excellent player
More than 2000 - "Unicum"