Macbook Pros have full range VRR (1-120hz) though, which not only reduces power usage compared to 120hz at all times but can bring it below that of 60hz at all times, depending on what you’re doing — for example if you’re just reading or typing or watching 24FPS TV/movies, the total number of frames drawn on a ProMotion capable MacBook is way lower than on its 60hz-locked counterparts doing the same thing.
This costs extra to implement though so you don’t see it too often in Windows laptops except sometimes in gaming laptops.