-snip-
I am obviously having trouble turning my ideas into words, so bear with me for a while as I try and clarify.
Hell does not have a strict hierarchy of ranks. Heaven is the one with that sort of thing, due to their bureaucratic nature. Hell is a much more looser organization, with responsibilities and powers haphazardly thrown about at the whims of those in charge. So the ranking system would be something like this:
Top Tier: Satan (Not a title, but the person. He can give himself whatever title he wants, after all.)
Upper Tier: Emperor, Great King, King, Grand Prince, Prince, Great Marquise, Marquise
Mid-Tier: Great Duke, Duke, Great Earl, Earl, Great President, President
Lower Tier: Knight, Great Marshal, Marshal, Captain
Grunts: Drude, Goblin, Imp, Cambion
So obviously the Tiers are order in relative power. So Satan is at the top, with the upper tier underneath him, and the mid-tier underneath those fellows, and so on. And at the bottom you have the grunts, who by definitely have no vassals underneath them, and thus are the weakest and least powerful demons in hell. Now, power between the different tiers is obvious at a glance. A Duke must get more respect than a Knight or Captain, since they're in the mid-tier whereas the other two ranks are in the low tier. But within the tiers it isn't as clear. Whether a Prince is more powerful than a Grand King or not depends on a host of factors, and what kind of respect they need to receive varies too. So the ranks in the different tiers are not equal. A Marquise can be seated closer to the host at a demonic feast than an Emperor, due to a host of expectations and special rules that built up over billions of years. The only thing that is certain is that the ranks between the tiers are more rigidly set. So no matter how much real power a Marshal could have, they'll never have as much prestige as a President, due to the obvious difference in ranks.
Am I making sense here, or just rambling to myself?