Playing an MMO with a controller

[Saiyakupo]

Says another person who doesn't step into coil.

In any instance a MMO dedicated mouse is better than your controller because you simply does not need to scroll through stuffs with your controller. The mouse instantly makes 24 slots on 2 crossbars instantly accessible. That's an undeniable fact. However this does not say that it is not playable with the controller, but it is just more tedious. There are only a handful of players who are on PS4 that can play top contents at an competitive level, throw them a KB and a MMO mouse and I'm sure they can do far better.

Depends on the class or role you're playing. Global Cooldown of abilities makes it so that you have plenty of time to flip through hotbars, so you're not behind those 'top notch keyboard mouse users' at all.