I have to disagree, sacs are pretty balanced and or slightly broken. I assume you are referring on 1v1 pvp. Each class has its own weaknesses and strengths. If you cant beat a class, try a different strategy.
I believe sacriers have been revamped twice, and as far as I know, sacriers were pretty OP and broken before those revamps. Even today, after devs implemented to trigger cling during a suicide attack.