Those are the maximum bonus for having higher attack or defense.
3.00 for DamageIncreaseCap means you cannot go over 300% damage.
0.1 for DamageDecreaseCap means damage cannot be reduced more than 10% of the original value.
3.00 for DamageIncreaseCap means you cannot go over 300% damage.
0.1 for DamageDecreaseCap means damage cannot be reduced more than 10% of the original value.