I’ve eaten at both, and preferred Chef de France. I’ve only eaten at each of them once. So, maybe I went when Chef was having a good night and Marrakesh wasn’t?
Also I live in NY where there’s other avenues for Moroccan food.
I don’t even remember what I had at Restaurant Marrakesh, but I remember thinking eh.
I do remember what I had at the CdF. And I remember it was good.
Your mileage may vary.