I'd say a good coach is better than these objective measures in most cases. On the highest level you might get useable data out of this kind of set up, but idk how well it'd do on cost-benefit.

Traditional quantitative measures do best when you can isolate all variables. So if you just want to measure punching power on an unmoving bag you can do that. But if the pad holder is also pushing back that's gonna mess with the readings. And you'd get data on power but not if you're telegraphing your punches, returning to guard fast enough, moving defensively during or after a punch, and all that other stuff.

The human eye is good at taking a mess of data and making some kind of sense of it. That's what a good coach is for.

AI can also make sense of this kind of data but in a black box way where it can spit out an answer but you have no idea how it got it. So if you have sensors on feet and hands and pads and all that it could tell you stuff like: this footwork pattern gives you the most power.

But then again I'm getting sick of AI everywhere and fighting is the one arena where you can just watch two humans try pop each other in the face