[@Savato]
Whitebeard could destroy the world, but not all at once. His power allowed him to go around causing tsunamis and shit, which would have eventually let him break the world. To interpret that as Whitebeard being planet-level is silly.

Blackbeard? God-tier? Really? Perhaps you have a looser definition of God-tier than I do, but to me God-tier beings must at least have some level of control over the fundamental forces of the universe.

He used Advent of Thunder, an attack with enough power to destroy all of God Island. And Doflamingo was killed by Counter-shock, he wouldn't even live through a single El-Thor.

Actually, Enel had the best Observation Haki in the entire series. He was able to simultaneously monitor the thoughts of every single member of an entire island constantly, annihilating anyone who so much as thought badly of him. Nobody else has used observation haki to any extent even close to that.

His one weakness is rubber. Other than that, he's pretty much unstoppable.