The only point where M1 Max/Pro appears to shine is performance on battery, which many professional users rarely use. You can also experience less noise and less thermal throttling compared to mobile high-performance i9 but other than that, I expect similar performance to high-end mobile workstations, based on initial benchmarks. We will see if there is any sub-2,500$ PC laptop on the market that can achieve better CPU performance. Then, you have GPU performance which comes near, but does not match mobile RTX 3080 according to Apple itself. Again you have less noise and less thermal throttling due to the efficiency of the M1 but definitely the new MBPs do not blow out of the water mobile existing workstations from Lenovo, Dell and other major OEMs. The efficiency of Apple Silicon is definitely something very exciting when it comes down to iPhone/iPad/MBA, but for devices like the iMac, or even high-end MBPs, Im sure many people are ready to sacrifice 3-4 hours of battery life, and some fan noise more frequently, but to have vastly superior performance compared to Windows-equivalent laptop. 20 hours battery life is an overkill. It is good to have a few hours of batter life for meeting, while traveling and such, but two-days battery life for a laptop is absolutely not necessary, especially when you sacrifice so much potential performance.
Bottom line:
M1 Pro/Max are not better chips than Intel's best mobile CPU in terms of raw performance. M1 Pro/Max are not better chips than Nvidia's best mobile GPU in terms of raw performance. With M1 Pro/Max you gain incredible battery life, less noise and less thermal throttling, and of course MacOS optimization, hardware acceleration for certain task and shared memory which may be quite useful for certain workflows. These pros alone are in my opinion a little disappointing. M1 is definitely the best ultrabooks CPU/GPU and outperform any low-voltage CPU/integrated GPU on the market, but the M1 Pro/Max do not appear to do the same in their respective categories, which are mid-tier performance laptops, and high-end mobile workstations. You still have the MacOS/Apple Silicon gaming handicap, software compatibility issue across platforms, and other cons that are hard to ignore.