Board Thread:Warhammer 40k General Discussion/@comment-6078851-20130130174042/@comment-3258762-20130317222949

Hardly, Horus heavily disliked the fact that he had become Warmaster, he felt himself unfitting. What Horus did better than anyone was combine forces. Where Guilliman could use his Ultramarines to greater effect than Horus could use his Luna Wolves, Horus could integrate, say, the unpredictability of the Space Wolves or World Eaters to work flawlessly with his plans.

Horus loved his father until Davin, and he wanted to be with his father, but he did not engineer anything against his brothers, other than possibly Alpharius. All that started after he fell to Chaos.

Perturabo craved attention because no one would listen to him. The Emperor saw him only as a weapon, but Perturabo was more than that, he was exactly what his father had wanted him to be but then denied to him: A leader. Not a military leader, but a leader of states, a leader of people, not soldiers. This is all explained in Angel Exterminatus, and I really recommend reading it, it is really good.