Sargent is a good back, but he lacks top end speed. If Iowa's line was better he would have done better, but so would Goodson. So he would still be waiting to spell Goodson.
Oh Goodson definitely is #1, I wasnt saying that as you can see Goodson has more speed, goodson seems to see the holes very well and he has the feet to cutback ala Russell, JLewis and Green. He will probably never have SGreen's power and size but with a really good blocking line with some holes Goodson should rip off a few big runs per game.