I've owned both.
Ways the AirPods Pro are better than Beats Fit Pro:
- Better noise cancellation
- Better transparency mode
- Better microphones
- Better-designed and significantly more portable case (which also has wireless charging)
- On-device controls less prone to accidental activation
Ways the Beats Fit Pro are better than AirPods Pro:
- Better sound, with significantly better low-range (doesn't have the over-the-top bass other Beats headphones have)
- Sits more comfortably and more securely in my ears (your mileage may vary)
- Longer battery life
- Usually less expensive than AirPods Pro
- Comes in colours other than white
- Doesn't suffer from the "rattlegate" problem of the AirPods Pro (at least not so far)
If these are available for the same price, which one you choose will come down to what's more important. Do you want outstanding sound, a more secure fit in your ear, longer battery life, and earbuds that aren't white? Get the Beats Fit Pro. Are you willing to settle for slightly less quality in audio performance, but with extremely good noise cancellation, transparency mode that sounds almost exactly like having nothing in your ears at all, good microphones, and a solidly- built case with wireless charging? Get the AirPods Pro.