Board Thread:General Discussion/@comment-9732657-20130519011726/@comment-9732657-20130520184214

That contradicts the very definition of an arrancar, a being that tears off its mask and seals the nuclei of its powers into the form of a sword. In the first place the Visored are masked warriors, the name itself stems from the visor on a knight's helm.

Arrancar have a Hollow base and are imitations of shinigami, while Visored have a shinigami base and go insane due to the melding and chaotic, cognitive dissonance of two souls. By definition White was a Visored who had reached its final state of development, thus transcending shinigami and hollows. His base was too weak to form an truly peerless adversary akin to Aizen and Ichigo and his lack of coherrent thought made him a lethal fighter, but a poor survivor. Further more, Arrancar don't experience Soul Suicide.