I agree with you.
But I will give you an example, because you are neglecting one big factor.
You can compare your Darwin with my short term Darwin ADW.
It is a third month in a row that I am giving profits back. I take trades almost every day.. Did I made more decisions? Yes. Did I get more experience? Sure I did.
So, you are not gaining Ex score as fast, but you are also not losing score on Pf. Or in other words you are keeping profits. Big big factor in my view!
One is already smart while the other is getting experience to become smart.
(and there are also traders with lack of trades in statistics simply because of their fear of losing. Who can 100% guarantee that the next trade will be a winner. Lack of trades doesn't mean you are automatically better off regards P/L)