How are brown and Gordon "true starting RB" when neither has been a 'true starter" in the NFL (and brown not even a true starter in college). TO BE CLEAR, I'm not saying they don't have the potential to be the best 3-RB set in the NFL, and personally I think they can be. But it can just as easily flop the other way -- meaning Brown could be a first-round bust (as many ist rounders have before him), Gordon could return to the 3.2 YPC back-up kind of RB he's always been, and ricky could quite possibly not be the same RB ever again.
I hope none of that will come true, and truth be told I doubt it will, but you have to think about it in the real world