I mean, I remember Apple comparing the M1 Ultra to Nvidia's RTX 3090. While that chart was definitely putting a spin on things to say the least, and we can argue from now until tomorrow about whether power consumption should or should not be equalised, I have no idea why anyone would expect the M1 Pro (an explicitly much weaker chip) to perform anywhere near the same.

Also what games are you trying to play on it? All my M-series Macbooks have run games more than well enough with reasonable settings (and that has a lot more to do with OS bugs and the constraints of the form factor than with just the chipset).