Yeah, I agree with him too. I'm not going to put a number on it, but it wasn't exactly a rare occurence that I felt a different and/or better back than Murray would have gotten better results on a carry. Of course I'm sure you can say there were times that Murray made something out of nothing too, but overall I think that spot is definitely upgradeable.
That being said I question (doubt, actually) whether or not Randle is the person who can actually get more "meat off the bone" on an every-down basis.
Of course, no matter what you think about our RB position you have to be somewhat excited about our upcoming season. Feel like you could say we are as good or better at every position except RB. And all that takes is one timely (and possibly not all that expensive) trade to basically be mitigated.