The sensor quality is at a deficit and the arm biomechanics likely are not a full match for those of mouse aiming in terms of range between the smallest and largest motions possible, but just the fact that gyro aiming uses absolute tracking of motions as mice do and is able to do microadjustments and flicks puts it much closer to the capabilities of mouse aiming than to stick aiming.
Oh yeah I grabbed GR Remastered on PSN last week, it’s still on discount. I just knew of it vaguely for being on these lists and was rather surprised to see 3-axis gyro aiming!
The Ally and AyaNeo 2S both have gyroscopes, although the Ally suffers from a profound lack of first party software support and so far users are having to use two layers of input mapping software to get practical use out of them.