Something I noticed looking in the GM section, it's suggested that NPCs have a CR equal to their class level (p389, Adding NPCs). This is a noticeable difference from Pathfinder, where it would be class level - 1 if I'm not mistaken. I understand that stuff like hit dice and the like are a thing of the past, but is this correct, it feels like it would be very hard to fight an equivalent party of NPCs, like boarding a ship for example.