All 5 aspects have a base efficiency calculation. What is important to know, is that the formula does NOT take into account just how much you 'scored' with a specific type of vehicle: It takes the total amount, and then generates efficiency scores based on percentages.

To clarify, let's take a very simple example for damage. 5 games played, 2 with a Tier VIII medium and 3 with Tier VIII Heavy tank. 40%/60%. A total of 1000 damage, all done in the 2 games with the medium tank. The formula does not calculate efficiency based on 100% medium usage, but on the 40%/60% ratio.

Using the Average Damage calculation as described below: 1000 * 2.5 / 8 = 312.5 Base Efficiency. Then we add (1 * 1000 * 40/100)/8 = 50 for Medium Tank Efficiency and (4 * 1000 * 60/100)/8 = 300 for Heavy Tank efficiency and we get 662.5. The exact same amount as you'll get using the website.

**Average destroyed:**

= _Destroyed * 20

+ ( 150.376 * _Destroyed * % / 100 ) for Tank Destroyers.

+ ( 150.376 * _Destroyed * % / 100 ) for SPG's.

+ ( 100 * _Destroyed * % / 100 ) for Light Tanks.

+ ( 100 * _Destroyed * % / 100 ) for Medium Tanks.

+ ( 153.85 * _Destroyed * % / 100 ) for Heavy Tanks.

N.B. Both 150.376 and 153.85 are rounded down. Actual numbers are 150.37593984962 and 153.84615384615. I'm sure they're divisions, but I just can't figure how they have been calculated.

**Average Damage:**

= _Damage * 2.5 / _Avg.Tier

+ ( 3.509 * _Damage * % / 100 ) / _Avg.Tier

+ ( 4 * _Damage * % / 100 ) / _Avg.Tier

+ ( 2/3 * _Damage * % / 100 ) / _Avg.Tier

+ ( 1 * _Damage * % / 100 ) / _Avg.Tier

+ ( 4 * _Damage * % / 100 ) / _Avg.Tier

N.B. 3.509 is rounded down from 3.5087719298246.

**Average Detected:**

= _Detected * 20

No added efficiency for Tank Destroyers.

- ( 20 * _Detected * % / 100 ) for SPG's. That's correct, a decrease in efficiency for SPG usage.

+ ( 200 * _Detected * % / 100 ) Suicide scouting never has been more rewarding.

+ ( 100 * _Detected * % / 100 )

No added efficiency for Heavy Tanks.

**Average Defense Points:**

= _Defense * 30

No added efficiency.

No added efficiency.

+ ( 100 * _Defense * % / 100 )

+ ( 200 * _Defense * % / 100 )

No added efficiency.

**Average Capture Points:**

= _Capture * 10

No added efficiency.

- ( 10 * _Capture * % / 100 ) Indeed, another decrease.

+ ( 2/3 * _Capture * % )

+ ( 2/3 * _Capture * % )

No added efficiency.

N.B. For both Light and Medium Tanks the / 100 has been left out. Not a mistake: Simply a rewrite from (200/3)/100 = 2/3

Hopefully, seeing this it will become obvious that the 'New Efficiency Rating' is a joke: Be it intended or not.

**Edited by AliceUnchained, 28 May 2012 - 10:55 AM.**