opposite for me, my skill in fps games transferred very easily to pubg and i was almost immediately able to get to the endgame consistently. once you figure out how to play the circles and how to use the guns correctly there's really not much more to the game. fortnite is the same but it has the whole building thing on top of it which adds an entire extra layer to the whole game. the whole building aspect is where fortnite's skill gap gets wider than pubg's. knowing what to build and how to build it as quickly as possible while fighting 1-3 guys makes fortnite's endgame and even early game more skill based and cerebral imo. it's also much more fast paced and has a smaller map than pubg which cuts out almost all of the running simulator stuff that can happen in pubg which is another thing i like.