User blog comment:DirgeOfCerberus111/Adeptus Custodes Vs. Grey Knights/@comment-3258762-20111028201245

1 on 1 the Custodes would lose, not cause their not superior in every way, but because the GKs are Psykers. They would probobly crush the Custode from the inside out. However, on a larger scale, the Custodes would win as their supperior training against foes that are human/space Marines would quickly outweigh the GKs anti-Daemon warfare. The GK are an elite force, but they are most of all a Specialized force. A company of Space Marines could beat a company of GKs if they were lucky.