The REAL item level requirement for extremes (becuz dev where drunk)

[Zumi]

Overgearing to beat bosses, that's the pro way to do it.
Just remember to complain that the game has no contents and that it's too easy.

You can't really overgear stuff in this game. T5 and Extreme primal still require proper execution even with everyone in full 90 gear. You get a little more room to make mistakes in 90 gear but not much at all. Its not like other mmos where when you overgear something it just because so easy there is very little chance to lose.

For example, if a healer stands near everyone with the bomb on Ifrit EX they are going to wipe everyone no matter what gear level people have.
You kill the spiny plume early on Garuda EX you will die to astral flow or mistrals song no matter gear level.
You don't stand in the proper position for upheaveal or landslides on Titan you are dead no matter your gear level.