Steroids are one of the reasons that the conversations go on and on, and are rather cheapened. There are folks on both sides that make cheap digs at the other side, and all of them bring the conversation down, because of the inclination to respond to the lower levels of discourse. It comes from both sides.
As to your point on Roger v. Rafa on clay: Roger beat Rafa at Hamburg, to break his win streak on clay (at 81 or 82.) And in Madrid at the inaugural event. He got very close to beating him in Rome in '06, and there were a few others that went to 3. The next closest was RG '11, and still Rafa got him in 4 sets. That's not really "a lot" of those matches. Rafa beat Roger on clay because he's better than Roger on it, and better than everyone else. I think that's not disputable. You may find it ironic that Rafa dominated for so long, and that Roger has finally found a way out with Rafa. A few matches, and everyone has a short memory. I'm not convinced that the rest of their days will be just Roger getting the better of Rafa.