User blog comment:DirgeOfCerberus111/Adeptus Custodes Vs. Grey Knights/@comment-2253300-20110819114042/@comment-3258762-20110819135922

The Custodes are littleraly made from the Emperor's stock, and no living being holds any closer love for him than the custodes. If the GW were to attack the Custodes on terra, the Custodes would almost certainly seem more ferocious than all the World Eaters put togheter. Otherwise, i think GW would win.