I've been using a Mac Studio for about a year-and-a-half now. It's easily the fastest Mac I've ever used, and this is "just" the M1 Max. It's also rock-solid stable. Apple really threw their best resources into optimizing the performance of the Apple Silicon hardware and their software for it. (Which is another way of saying, they had shifted all of their resources over to it several years ago, and the last of the pre-Apple-Silicon Intel stuff was bug-ridden, unreliable, and in the case of the last Intel Mac Mini: unusably slow and the absolute worst Mac I've ever used.)
While I don't have exact comparative figures from earlier Mac Pro hardware, I recently had to render out a nearly 10 hour compilation of animated films to Apple ProRes HQ (24 fps, 1080p, 24bit 48kHz uncompressed audio). To render the entire show on a Mac Studio: 25 minutes. That's jaw-droppingingly fast. I'm certain the Mac Pro (2019 model) took at least 1 1/2 to 2 hours the last time I used one of those a couple of years ago, and that was for a show at least two hours shorter. And that was an $11,000 Mac Pro when it was new.