Let me just put this out there.
Devon Achane is a good speedy back who has good power for someone his size. He has track speed and had an impressive 4.3yds after contact last season. I say all that to say he benefited from having a much better OL last year. So far this year he's only averaged 2.6yds after contact as A&M's OL has struggled to start the season.
Amari Daniel's hasn't really played but I'll never downplay a Dade County RB so I'll respect his talent as the backup.
On the flip side, Miami had a terrible OL and run scheme last year but Knighton was still productive. Parrish rushed for 600+ yds in the vaunted SEC. Franklin is 240lb Ford truck with Lamborghini feet.
I think you guys are giving Devon Achane way too much praise. He's good but he's is CJ Spiller or Lamar Miller.