Nobody is saying it’s going to run well on the entire range of hardware but in terms of performance GPUs in Pro and Max versions of their SoCs are closer to a discrete GPU than something integrated.
Benchmarks I'm seeing has it at about 1/2 what a 4060 can do... (at least according to 3dmark, which is a pretty good indication of game performance.) And a 4060 can barely run cp2077 at 60fps at 1080p.
M3 gfx is still way better than intel integrated, but I don't think it'll drive CP2077 at 60 fps. it's pretty close to the AMD integrated stuff, though... and I get 30-40 fps on my AMD lappy. So maybe the m3 can do about the same. I wouldn't call it unplayable, but it does kinda feel like a size 12 foot in a size 8 shoe.