CHALLENGE The_ CHAMPIONS LEAGUE, The_'s CHALLENGE CHAMPIONS LEAGUE

Juristis (488-784-621) plays a lot and has a high win rate.

We didn't consider the "plays a lot" criterion. Akella has 37 games, the same as Maretti. However, the autumn rating results are disappointing: 1353 (Akella) versus 1709 (Maretti).
At the beginning of November, Juristis has 15 wins, 9 losses, and a 62.5% win rate in the autumn season. Is that a high percentage?

To reach the group stage, players in the qualifiers need to win 2-3 times. I don't think you should worry about those you, the three organizers, have included in the lists. I think their level allows them to easily pass the qualification without your help.
And in the groups, the game will put everyone in their place.