I would think a nearly 1000 yd rusher, averaging 4.7 ypc, and 10 TDs 23 year old RB would be worth a 2nd rd rookie pick. Especially since the Colts didn't care to sign any of the FA RBs.
I look at his stats and I see this:
YR WK OPP oSNAP RSH YD TD TARG REC YD TD
2018 10 JAX 33 12 29 0 2 2 9 0
2018 11 TEN 38 16 61 1 2 1 8 0
2018 12 MIA 36 15 85 0 2 2 11 0
2018 13 JAX 28 8 27 0 1 1 6 0
2018 14 HOU 40 14 33 1 1 0 0 0
2018 15 DAL 44 27 139 2 1 1 10 0
2018 16 NYG 43 12 34 1 3 1 4 0
I ignore Week 17 stats for every player in the league, so that is not a selection bias.
104/408 is fine, but it's under 4 YPC. The 5 TDs in 7 games is impressive, as is the 8 catches for 48 yards (just in the exact opposite way).
I know they have two other young RBs there and Hines is the COP back.
The Indy line performed spectacularly last year, but I think my view of Mack is closer to what he is than the high YPC/1,000 yard/10 TD guy that you see.