How do you like it? Are the graphs beautiful? I agree! But the statistics remained the same (with only minor changes) and therefore practically useless... However, a Heroes III expert could draw approximate graphs even without all this statistics. And greater accuracy cannot be achieved due to the fact that the strength of the players themselves, who played for one Castle or another, is not taken into account in the statistics.
Yes... It turns out that for the next season, we need to provide statistics taking into account the strength of the players. The question is which coefficients to use. I think they can be selected empirically. Only again, there is no point in this, because, as I said, "a Heroes III expert could draw approximate graphs even without..." And the graphs will remain the same as before, only more smoothed.