You could say the same thing about DWilliams, thats why I traded him for Maroney and a draft pick in the mock draft.
To take this even further, besides Barber, look at this year, Gary Russell also ran for 1130 yards for Minny this year, averaging 6.1 yards a carry versus Maroney's 5.2. At times this year Russell played over Maroney in big spots. Heck even Minny's 3rd back, some guy named Amir Pinnix ran for 467 yards at 6 yards a carry. He may turn out but the point is this could be a little like Denver in the NFL.
Barber was productive in dallas. especially when jones went down .. Maroney is a better prospect and was better player of the 2 when he was playing in minny. imo i watched maroney alot over the last 3 years . i think he could be excellent player in the nfl. but thats just my opinion