You probably didn't see it, as you were writing your reply, but i put a screenshot with stock gpu settings in cyberpunk 4k pathtracing, and one with my undervolt.
The gaming goes to 1.05v by default, where as the windforce goes to 1.00 by default, so a little bit less voltage the windforce has to cool. As for the small watt differences, it's likely down to binning of the chips.
If you aren't annoyed by the fans on the gpu, that's great for you - but alot of people (myself included) are very sensitive to noise, and want the noise to be as low as possible - and it will never really be low with the windforce, unless you run a very aggressive undervolt, and consequently lose alot of performance.