I don't think either of them have much of a season. I love Zeke, but I can't see him rushing for more of anything than what he did last season. Damien Harris had 106 attempts for 462 yards and 3 TDs last year with the Pats and I'd guess Zeke will average somewhere around the same and be one of Matt Jones best friends in pass protection.
Deuce has to make the game day roster first then I'd expect maybe a couple of hundred yards and a couple of TD's with some really electric moments. I could care less about his size, but he's still a rookie 6th round pick and we all need to remember that. I think Deuce's best chance comes as a return man. I realize it's not something he did in college, but that was mainly because he was K-State's feature back. He's also got Turpin in front of him, but KaVontae doesn't have Deuce's football pedigree. Deuce looks so fluid in the open field making people miss that he seems like a natural return man that can also add value in the running and passing game. For me personally there's only room for one of these type players on the roster and it comes down to Turpin or Vaughn. I'll let the coaches decide.
I hope they all do well. Zeke was a great teammate and I think he'll fit in a Belichick locker room well. Deuce is obviously a blast to watch run and would make a good underdog story as does Turpin coming from the USFL. I'll be pulling for them all on Sundays, Mondays, Thursday's, and sometimes Saturday's.