I can say for a fact that at the top level Grapplers have a much harder time. There are less of them that make it to that level and the ones that do never have the dominant runs the strikers do. The most dominant grappler in syn history never won more than 6 in a row
https://mmatycoon.com/fighterprofilepublic.php?FID=346764
Submission guys are less viable in the end game. Strikers are fairly dominant at the top end.
If you add another secondary for grapples to train (clinch TD offense) while simultaneously making primaries now count as double towards skill cap it now becomes even harder for Grapplers who have more stats to train and less points to do it.