All team sport statistics are team dependent and describe mostly teams performance and not players performance.
For example if in a sport a team contains 10+ players then the win rate and other variables describe mostly the teams. If team size is smaller like 2 then the data describe player little bit more. Even if there are 1-1, tournaments then all available competitors in the tournament at a season are actually all together a teamlike group and seasons have different player base so one can't compare results between seasons either. Few teamless games have a score that is quite ideal to measure skills. For example in Bowling you can measure how many points individuals got and world record owners are best in the leaders board.
So, there is no ideal way to invent a statistics to measure and compare skills in teams port.
In Wows the best way is to take team stats in Rankeds Sprint 1 by playing advanced ship types in small teams. For example, the stats for the 1st day completion of Bronze using American CV, DD and/or a Sub, 40 battles at TeamsWR=60%, Average top=3.5/6. Such data is not ideal because it describes teams and not a player so much, but it is acceptable because there is no better ways to perform exam type of skill measuring in the team based Wows. Totally unacceptable is to use data where you replace latter numbers by: 4000 in any game type, any ship type, any year, AverageTop 3.5/6-15. Obviously the 40 battles exam data is more accurate.
Q1. Why you think that Sprint 1 data is better than previous 3 years data?
A1. Because 3 years of data contains more likely misleading data. For example, an athlete becomes more skillful during the years and his peak form is always in July, so he can be the world leader according to the previous year summer but has an average performance if to count all previous years and seasons. That's why you need a short exam like day to measure skills in small teams against the most skillful competitors. And you can't use data from last 3 years.
Therefore Wows community Stats are inadequate statistics.
Q2. If RandomsTeamsWR is not adequate then why racist community still prefers it?
A2. TeamsWR does not neasure individual skills but can be used to predict how a player's next casual battle may go. The same way one's employment history in various companies can be used to predict something about his future jobs but it doesn't measure the candidates skills and potential.
In Wows teenagers just don't understand some English terms like Skill, Knowladge, IQ , and they use those words in a wrong meaning. There is nothing to do with Iq in Wows and in most areas of life, but it is popular still to brag about Iq and think that their Ego is better and smarter if they mention foreign words.
So, it is just a brainwashed attitude to talk that TeamsWR means skills and Iq and everything. It is the Stats Religion.
Because many/most or almost all do something does not prove that the thing they do is adequate. For example, most try cigarettes in life and more than half smoke everyday- that does not prove that smoking is good. The same is with teenagers communities, most like to talk about IQ but they cannot even define the word. Same is with Wows community's belives and attidues.
You can debunk that topic/question by showing my Exam results which show around 70% wr for Exams and contradict community's RandomsTeamsWr.
Example where TOP 6 golden player "[KOTST] my_name_is_Nobo, RankedsTeamsWR=56%" tells to TOP 2 player "Fastmotion, RankedsTeamsWR=42%, RandomsTeams=45%" that the latetr one has 45% amount of skills. He is a perfect example of Wows commnuity who takes RandomsTeamsWR as Skills and God. He performed worse than the 45% player and palced TOP 6. Wows commnuity is not capable to adequately explain such contradiction in their Stats rewligion believes- for them Stats are God and no need to bother why the God places 56% player as the last one and worst one in performance while the Devil with 45% carries the battle and is TOP 1 advanced ship.
https://imgur.com/C4Dg2bzhttps://imgur.com/4IdG1uC