Well its true to an extent. The gamepad is such a shitty option for aiming in twitch-based shooters. It's impossible to turn quickly enough without sacrificing precision. Lost Planet sort of had the right idea when they added multiple aiming schemes that offered balance between aiming and turning.
The mouse... it just functions as an extension of the arm. It's fluid and takes no experience. It in no way limits your precision.
------"That don't look like no golden marmoset I ever seen!"
Steam + PSN: PHJF