User blog comment:Salubri/Hollow. Arrancar, Espada & Vasto Lorde/@comment-1432572-20100826221318

Wait a sec, if Releasing makes an Arrancar look somewhat like they did when they were hollows, how could Nel possibly be a Vasto Lorde? She quite clearly wasn't human in appearance.

Anyway, I think Hitsuguya was right. 10 Vasto Lorde Arrancar could wipe out Soul Society. I mean, Primera was a natural Arrancar, and if I remember clearly, the boost a Hollow gets from taking off its mask is very slight while (very apparent from the anime), an Artificial Arrancar gets a substantial boost. Now imagine 10 Baraggans running around. Even fire can age (in the sense that it can run out of fuel)