Dr. Strange / Dr. Doom: Triumph & Torment is a wonderful book.
I have it as well as Emperor Doom. Two perfect examples of Doom. But there is a world of difference between this scene and the kneeling scene from the last issue of FF.
Doom does indeed show respect where respect is due. And his old-world manners are legendary. But remember Doom is here because he wants something and every move he makes is part of the plan to get his mother's soul from Mephisto. (Who was shown as an actual, horrible demon in this book, not the usual half-assed devil-man as usual.)
But what you think his reaction would have been if the Aged Genghis had demanded Doom kiss his ring or fall to his knees in submission? I agree that it is a show of respect to a elder, but superior? I have my doubts.
His honor would demand that he kill the Aged Genghis in such an event. His last words show that Doom respects his position in this affair but also establishes that he is no longer a student but a master. I think that Doom addresses the AG as a "First Among Equals" in this situation. It would be interesting to see how Doom reacts to him if the AG held come to Latveria for some reason.
Such a great book! One of my favorite lines that shows Doom's character and is relevant to the question at hand:
Dr. Strange: "Von Doom, if you have worked so long for your mother's salvation, why did you subject yourself to the contest of the Vishanti... ...Why did you never simply seek me out and ask for my help?
(Panel of Doom staring into the fire.)
Dr. Doom: "I will bear any ordeal, Strange...But Doctor Doom does not beg. Good night."