Evidence for the benefits of yoga is vast and easily accessible online. It is great to see question like this which focus on the comparison of yoga to other exercises.
There is quite limited amount of studies which investigate the benefits of yoga over another type of exercise.
When kids were examined yoga did not show benefits over traditional exercises ...
In Yoga Journal, I've found one description of yoga:
Classical yoga, however, is a holistic practice comprising eight
limbs—the physical postures being just one element of finding peace
The same author is aware that yoga can mean different things to different people:
Yoga in Western society often misrepresents the physical practice,