Current situation:
Object A (Monster) uses effect X on Object B (Player).
Effect X have crowd control effect (Knockback or knockup)
Effect X happens in 100% force regardless of Object B (Player) stats.

Proposal:
Object A (Monster) uses effect X on object B (Player)
Effect X have crowd control effect (Knockback or Knockup)
If Player have 15 Strength, effect X happens in 100% force
If Player have between 16 and 45 Strength, effext X happens in (115-Strength)% force
(Here insert some script for between steps)
If player have 1524 Strength, effect X happens in 40% force

Effect - Player with maxed-out strength who would me knocked back by 2 meters, is instead knocked back by 0,8 meter (40% of 2 meters)
Player with 45 strength (30 over base character strength) will be knocked back by 1.4 meters.