I have gone through to the pain of using powerMac. Sluggish and the bomb sign often show up. The Autocad on Mac Quadra was sluggish too. Witness Simulation software couldn't run on Mac. Then the big boss... decided to switch to Dell. It was such a relieve and speedy too. Power PC couldn't compete because the demand wasn't there and no money for improvement on the design. Mac OS on Power PC was a piece crap.
Those days, software have big influence on which platform they run on, but it is much lesser today because on convergence in feature set. Moreover chipsets nowadays are expanding their feature set covering very specific use cases with SIMD, and NPU, hardware codec, so we no longer can do a one-to-one comparison with years back around 2000.
It would seems the list of softwares you have mentioned are inherently Windows based and software developers those days are more proficient on Direct2D/3D rather than OpenGL. It didn’t happen to me when I was on PowerPC with my kind of software + image editing. Those perform quite well on Mac. As we know Apple has come a long way designing the Cortex processors since AIM PowerPC, and clearly the iPad Pro 2020 isn’t a shabbily machine, thus I do have confidence that the migration to Cortex will be an interesting move.
