Here are your previously listed criteria for a hub:
Based upon your definition, I'm struggling to see why you are considering PHL a hub and ALB a "focus." Especially since ALB is known to terminate/originate the Lake Shore Limited during disruption and fans out in four different directions to cover service. No long-distance trains EVER originate or terminate at PHL and prior to the pandemic, ALB originated more regional service (6 starts) than PHL (3 starts.)
If you honestly feel PHL is a hub, you are definitely entitled to feel that way. However, it flies in the face of your own definition.