User blog comment:Silver-Haired Seireitou/Advancing with the Fanon Canon/@comment-18812574-20141201030421/@comment-3403804-20141201120026

The "Cero" Position in regards to Grimmjow's Espada, is hardly as powerful as Grimmjow is himself. I consider the Cero position to be something of a siege weapon, an immensely powerful force of raw destruction to serve as a weapon of war. I don't think Yammy ever came close to Stark in regards to fighting prowess, but he was certainly capable of wreaking havoc wherever he was unleashed, like some oversized siege weapon.