Suggestion:
B2 Mow down
Add a line to the end of this skill which reads 'This ability cannot be countered'.
Rationale:
Mods considered equal, Grievous teams are completely dominated by CLS lead rebel squads. The reason is obviously strong counter attacks, but here's the real problem...
Separatist droids are organically a very low speed team. They make up for with turn meter gain from hitting target locked enemies (best way to apply TL is grievous wounds AOE) and B2 applying debuffs (best is B2 mow down AOE).
Giving Mow down the 'cannot be countered' mechanism will certainly not make separatist droids completely dominate rebels (I'm quite sure rebels will still be a great counter for Sep droids due to bad AI lol) but it will allow the faction to generate some turn meter, giving a greater potential to win on attack without getting completely ruined by counter attacks