For those, who doesn't know what it is.
Currently CA-style ctf server is using map-dependent ratings, which is calculated with formula above.
Map-dependent ratings mean that player's rating depends on current map in server. For example, my rating in japanesecastles is 683.14, in rctf7 is 639.09

Overall rating is shown here: http://vds2.eugene24.ru:7082/#/ratings/ctf
If you have any ideas, suggestions, questions - this thread is good place for that.