Sorcerers are male spellcasters and are major players in the supernatural community. They see themselves at the pinnacle of the supernatural food chain. This is supported by the fact that Cabals are invariably led by sorcerers.
Sorcerers, when they father children, are believed to always father sons. Sorcerers are also generally seen as being superior to witches in terms of power, but this is likely due to the fact that sorcerers are far more organized and active in the supernatural community, being in charge of the Cabals and that sorcerer magic tends to lean more to destructive and offensive applications.
The rivalry between the two races has separated witches and sorcerers for centuries. The fact that witches and sorcerers recognize each other's races when eye meets eye does little to help that situation.