You can read studfucker's entry here: I Love You, You Pay My Rent
studfucker, through his posts, strikes me primarily as an exalting dominant man: he dominates other men to help them achieve and fulfill their submissive natures. Together through this, he and his submissive reach mutual exaltation; they reach their current boundaries dominant and submissive and stretch them that little bit further.
The other type of dominant he describes, the "Uncaring or Evil Top," is a degrading dominant man: he dominates other men to break them down and possess them. They are his objects; they and their boundaries (and exploring those boundaries) are not his concern as he has already brought them to a low enough level, one sufficient to keep them with little effort on his part. Speaking judgmentally, his dominance is lazy, it doesn't expand or explore; it is content with itself.
In the field of dominance and submission, I'd suspect that (as an inexperienced novice) contentment is generally undesireable. Dominance and submission is about exploring oneself and (sometimes) helping other explore themselves.