The Lord of the Ring's Point

Saramon is beaten as this great power, and then there's the moment when he's killed. The fact that wax was able to beat him utilizing the one factor about him that was more of his identity than anything else made me happy. I appreciated defeating suit and his plan more so than seeing him die. So here's another question for you. Is this an event or a motif that happens a lot in other places? Cause i couldn't think of anything else.