**If your Battle Weight exceeds that of your attacker, then your chance to resist a knockdown effect is a percent equal to the difference in your Battle Weights.**

In other words, let's say we have a Void Assassin sitting at 14 Battle Weight. He's using Cutthroat someone who has 45 Battle Weight. The difference between these two figures is 31, and so the Void Assassin's chance of knocking down his target with a critical Cutthroat (using the Break Down passive) has been reduced from 100% to 69%. Or you could say, the defender's chance to negate the effect is 31% because his Battle Weight is 31 greater.

The same check would be made for things like Pulling Shot, Heavy Tackle, Sky Chariot and so on. Conceptually, the idea here is that strong characters are brutish; they will not be brought to the ground by smaller and physically weaker enemies so easily. You could even throw in a stipulation similar to the evasion check between armor types, and further play with the likelihood of resisting knockdown.

In the above example, we used a difference of 31 Battle Weight. This equates to a 31% chance for the defender to negate knockdown. But let's throw in armor modifiers for fun.

Heavy Armor: 100% (31%)

Light Armor: 50% (16%)

Unarmored: 0% (0%)

So as you can see, wearing heavy armor would allow one to retain the full percent from this Battle Weight difference. Wearing light armor slightly penalizes your effective chance to negate, and wearing unarmored means that you can never negate knockdown no matter how high your Battle Weight is. This somewhat mirrors the evasion mechanic.

There are no doubt dozens of ways to make STR slightly better without breaking the game, but this is not one that I had seen anywhere. Curious to hear feedback.