Wow, for the first time you actually came with an intelligent post.
Proof will sell BOTH because of his skills AND his affiliations.
Also, don't be dump, hip hop heads know that Royce/Em used to be as close as Em/Proof. I'll bet that a lot of people who picked up Royce's shit did so because they knew he used to be down with Eminem, I know that's why I picked up Royce's shit.
And if nothing else, Royce obviously respects Proof, otherwise he wouldn't have given him props.
opinions are opinions and in mine, Proof is better than Royce.