From top to bottom, how would you rank the Warlords of Draenor in terms of power?
1. Ner'zhul
2. Gul'dan
3. Grom Hellscream
4. Blackhand
5. Kargath Bladefist
6. Durotan
7. Kilrogg Deadeye
My logic; Ner'zhul holds the most power and knowledge, despite being relegated to a supporting role in the story. In a battle between him and Gul'dan, I think he would best his pupil, so it goes to say he is more powerful than Grom as well. Grom and Blackhand would be a good match, but Grom is too skilled and powerful, putting him above Blackhand. Blackhand I believe, is more powerful than Kargath, who in turn would edge out Durotan and Kilrogg as well given his savagery and experience in a gladiatorial arena. Durotan vs. Kilrogg would be hard to determine, but I think Durotan has the power, making Kilrogg the run of the litter.