Try to look at it another way:
If I was playing an actual fighting game and I only used one kind of move, then the enemy is going to adapt and win. To actually properly fight someone you need to be able to adapt and use your whole arsenal of abilities. This is in the same vein as this PF.
If I keep using moves that the enemy can completely avoid, or in this case actually make the enemy stronger, I should stop using those moves/abilities.
You need to adapt to your opponent and find a way around his new, enhanced defenses.