Do you think you can be competitive with a controller on PC in this game?
Depends on how you adapt. I tried it (with my xbox one controller and xbox 360, didn't try it with a ps4 controller yet), the walking and running was better as it transition smoothly without having to push another button to walk. But i didn't like how it controlled when it came to shooting personally, there is some sluggishness or input lag there i think . Compared to using a keyboard and mouse, plus going from cover to cover is better with KBM in my opinion but the controller is not too bad.
(Love how easy it is to switch back and forth. Since the game can recognize the controller change without having to go to the menu)
Although having it all there in you're hand controlling the character does feel good overall. Now will you out do a player using KBM? maybe not but who knows.
Either way I'm going to try it again in the full game, and connect it to my usb 3.0/1 port this time.