It's certainly not more control than a mouse. But I have to say, my number 1 gripe is it's overall utilization. Only works when in stream mode, clunky with a fair number of games and has to be custom setup for each game and dialed in. By no means is it plug and play friendly. Even though there is a sort of "mouse" mimic mode, it can be wonky getting it to work. The learning curve is quite steep. I will admit, for FPS, I do find it a better controller than the xbone or PS4s. Particularly when you have the accelerometers in use for fine movements while scoped. But the mouse is superior to that.
The bulk of my experience was with GTA V and rocket league. Once I started using the xbone controller that came with the rift though, I haven't touched it since. Maybe I'll come back and give it another go, but chances are....
All that said, your mileage may, and I certainly hope does, vary. You may enjoy the hell out if it. Especially if you like fiddling with things.