F|A server overrated??

[Scarhand]

Testforecho once mentioned doing a comparison with FA and another server and this is his results:

I am sure the real formula is more complex, and I don't know it , but to make a simple one let's say that a server has:
average rating 10, average ppm 6, then if you wanna go toward 30 rating, you need to make 18ppm (30/10*6) so to make a good rating, you need 3 things:
1. high average rating and low avg. ppm, so you need low ppm
2. the actual ability to make those ppm in that server.

examples taken from 2 random real sessions I found, and calculated with my simplified formula:

server  avg.rate avg.ppm  ppm needed for 30 rating
FA2     11.02    6.3      17.15
BiO     9.05     6.24     20.69

In this case, it's obvious that you need to play in fa2, since not only you need to make only 17 ppm and not 20, but also because making 20ppm in bio is probably much harder than doing 20 in fa

that's why. Even if my formula is simplier than the real tb formula you can get the idea

As you can see, the average rate is very different proportionally to the average ppm there, which doesn't make sense because it should balance out. My belief is that it is due to team-stacking, which I often hear complained about. Hopefully, TB which switch to team-based comparisons which will greatly improve the accuracy of rating.