Frequently Asked Questions

1. Where is the data from

All the data has been collected from Wargaming API and processed with R/RStudio.

2. Are your numbers correct? Is there bias in the numbers?

The statistics have been calculated from a data set with very high number of players (700,000+) and battles (in total 6bn+). That is maybe 4 times the users has. However, there is still sampling bias as there is any Blitz stats tracker site. This is evidenced by the overall WR distribution and the share of all wins out of all the battles in the database being above 50%. This is a topic worth of a longer post - stay tuned.

3. Why did you make the site?

Out of pure interest into analysizing Blitz game statistics and to learn data analysis and R.

4. What is “Relative WR”?

Relative WR the average of player WR in a tank minus their Average WR in all the same tier tanks. If the tank is perfectly balanced, its Relative WR is 0 %. Large positive Relative WR indicates the tank is “very good” (read “OP”). Negative Relative WR indicate the tank performce worse than other same tier tanks. Relative WR is one of the better (if not the best) best measures for tank performance since it takes the skill differences in tanks' playerbases into account, IMHO.

Relative WR R code

5. Is BlitzAnalysiz[]' Relative WR different from Blitzstars' one?

Yes, a bit. At the moment calculate the Relative WR as WR difference to the players' average WR over all their tanks. BlitzAnalysiz[] considers only the other same tier tanks. The real differences are likely rather small.

6. I spotted a mistake or I have a question/request

All the feedback on the site is welcome. You can reach out me via email (, Discord (Jylpah#4662). I am also active at WoT Blitz EU forums.