And while using a controller can't be as fast as using a mouse, it doesn't mean it can't be precise enough to point instantly what you wanna point, you just need more practice
Actually, it means exactly that. Even at the highest sensitivity setting, a controller simply cannot out perform a mouse in term of speed and precision - it's an anolog input device. Not only is a mouse more precise, it is also easier to maintain precision at high sensitivity/speed - this is something that tends to gets overlooked.
A player would truly need to master a controller just to be able to do what an average mouse user can achieve.
I'm not bashing the controller. I understand people like for comfort reasons, or sitting on the couch or because it "feels" better, but saying you prefer a controller because it can outperform a mouse, is mathematically impossible.