A friend looked into the divide and tweeted about it:-
Cross Faction is the solution, not trying to get a 50/50 split.
14 August 2021 (SL Season 2)
Cutting Edge
H: 89%
A: 11%Ahead of the Curve
H: 76%
A: 24%10/10 Normal
H: 64%
A: 36%
For M+ (Harder to compare due to new rating system)
2600
H: 86%
A: 14%2400
H: 79%
A: 21%2200
H: 75%
A: 25%2000 (Keystone Master)
H: 71%
A: 29%1500
H: 69%
A: 31%Literally any key all season (3 hr +2 depletes incl)
H: 64%
A: 36%
https://twitter.com/Valrysha/status/1426444242784858117?s=20
https://twitter.com/Valrysha/status/1426444244605149189?s=20
https://twitter.com/Valrysha/status/1426444246077300740?s=20
https://twitter.com/Valrysha/status/1426444247742525442?s=20