Just assume that a sorcerer’s power is through the spirit world, a wizard’s via a capacity within himself; a well for magic to precise. Which would be the more powerful? The spirit world, with its elementals, air, fire, earth and water, or the power from within? But elementals are not the only spirits. Elementals exist on our plane, but their cousins the demons live in another world from ours.
Demons of immense power.
Demons that spread ill within the world, plague and disease.
But what of a kara stone. A stone that can contain magic. A well to enhance a wizard's power.
Who now is the more powerful?