@8925
"Relevant has to be relevant to something. To what?" ++ To weakly solving Chess.
"I usually try to win as Black" ++ 'weakly solved means that for the initial position a strategy has been determined to achieve the game-theoretic value against any opposition' Hence we look for a strategy for black to draw against all white opposition.
"look at my data" ++ There is something wrong with your data.
"Here is a 269 move game Ivan Nikolic vs. Goran Arsovic (538 ply)"
++ I know that game. They repeated some positions twice. There were many forced moves. The game reaches a 7-men endgame table base draw on move 108. For the purpose of weakly solving Chess it ends there on move 108.
ICCF WC Finals games lasted between 13 and 119 moves, 42 moves average, with standard deviation 16. For the purpose of weakly solving Chess all lines end around 119 moves and most before 42 moves.
It's worth remembering that it would have been just as easy to believe engines were near perfect when they were a few hundred points weaker. i.e. very weak.
Likewise world championship matches had a lot of draws when the players were about 800 points weaker than a top engine now. It did not mean they were perfect: it meant they were not good enough to obliterate the opponent almost 100% of the time.