Hi. I'm pretty ignorant about Keystone longterm, but the short answer probably is the Outback got more snow, and the in between North Peak probably didn't get enough.
The front mountain, Dercum Mt., is about 10+" away from being good, on all natural snow slopes. It has ungroomed runs (with no manmade snow) that are open and some that aren't, because they are close to not having enough. For instance, a run called Bachelor, I believe, was marginally fine. One called Santa Fe, on the other hand, was an edge-gouger. Ouch!
The back side of Dercum, facing more southwesterly, can't open yet, except for the short park run Scout/Ranger, which must have gotten lots of manmade snow.
Opening North Peak now, too early, would probably just multiply problems for the patrollers and snow-makers.