I think Stages is covered here:
https://www.bikeforums.net/track-cyc...computers.html
Basically, Stages is designed for long road rides where what happens with one leg can safely be extrapolated to happen with the other...on average. Also, the sampling rate and wake up time are issues with track sprint efforts.
Yes, it's a power meter, but not one that's ideal for for recording Track Sprint efforts. Like when one needs to cut a steak and reach for a butter knife because you used it daily to cut butter and it was good at that.
It
will be able to cut the steak. But, it's not the best knife for the job.