Wow! you're right. Those historically top tier hero powers are really pulling a lot of work to put Rogue and Warlock in tier one this meta.
A class being bad has nothing to do with the strength of their hero power. Warlocks have the best hero power in the game, no one argues this. They are also bottom tier.
https://en.wikipedia.org/wiki/Sarcasm
You can taunt an attack, you can't taunt direct damage. Face hunter could kill you just as fast in 2015...