You can't really do a furry surface with a regular PBR shader. You need a fur rendering system. For example VRayFur https://www.turbosquid.com/3d-models/tennis-ball-fur-3d-1144972
Physically based materials in games IMO are true looking only for limited number of subjects. Like something plain plastic or metal. And even never look same in different renderers. Compare iray and GL in substance designer /painter for example. Anything complex like grass , asphalt surface , snow , velvet , anything fury…