Zizou: 1) Undeniably lucky. Forget the luckiest CL campaign, RM suffered from poor form for many months over the past 10 months and yet didn't lose once. They have shrugged off the absences of Modric, Kroos, Bale, Benzema without any consequences. And now they are starting to actually play well. Scary.
2) Great man manager, the most important asset in this RM. A combination of his aura as a former best in the world and his genuine humility. His players look up to and admire him, and he's unlikely to get in an ego war with anyone. He's managed to keep Isco and James super sharp despite little playing time. RM has unbelievable depth, the best i've seen actually.
3) Not a great tactician by any means. I figure he'll become decent with experience.
He's not a great coach per se but he's the best coach RM could get.