Phase lords came in many different forms. While they all grew big and gained spatial abilities, they tended to evolve in dramatically different directions due to variations in development trajectories.
The starting point of phase lords also affected their properties.
It was also important to keep into account that the body cultivation approach of the native aliens originated from the phase whales. It was only natural for the phase whales to get more out of it and gain both tremendous physical might as well as an excellent affinity for phasewater at any stage.
In comparison, nunsers generally got a lot less out of the same method adapted to their race. Their imperfect rituals and other flawed adaptations might affect the efficiency of their growth as well.