There is a big difference between your division and mine. When I started to play BB you could easily understand which teams were better than your and you could understand if you won because you had a good time or thanks to random.
In my division the teams are more or less at the same level and it seems to be completely blind no one explaination is "realistic"; BB Forest said that ratings aren't reliable at all, a little bit better are the MRs but you can check 100 games and you can see with your eyes a lot of teams winning even if they had lower MRs.
1990-2022 Stalinorgel - https://www.youtube.com/watch?v=pV-Xppl6h8Et