Board Thread:Warhammer 40k General Discussion/@comment-6078851-20130318203252/@comment-3258762-20130401093236

Well, the thing is, Horus was such a great Warmaster because he was incredibly charismatic. Being Warmaster is not just about leading your legions, which Horus did better than Guilliman as he stated himself, but about making your brothers work together by working their levers.

Guilliman said that he could beat any foe when he worked together with 4 other Legions: The Iron Hands, the Space Wolves, the Blood Angels (I think) and a third I can't remember, but Horus could use any legion, not through his own tactics, but by evolving to suit the other legions tactics. What made Horus superior to Guilliman was the fact that there were never any obstacles he could never trumph in mere moments.