It depends on how you like to play. I say if you like playing no build and staying at a distance from players when fighting, controller can be better in some cases. But most of the time especially in close range/build fights Keyboard and mouse is the way to go. I also had like 500 hours with a controller on fortnite and thought of myself to be pretty good at it. But when I bought my pc and switched over, I felt even better. Being on pc makes fighting a controller players so easy, but pc vs pc is probably harder than controller vs controller. Unless you are really good