Todd Gurley, Bishop Sankey, Paul Perkins and Derrick Henry all appreciate your show of support for over hyped rookies.
That is quite the mixed bag. It's really hard for me to try to determine what your point is, from what I can see you don't have one. I am going to assume that you are listing those players as being once "over hyped rookies" Unfortunately for your argument it just doesn't make any sense.
None of those players you listed are comparable to this years top 4.
I looked at current MFL ADP and the top 4 this year are:
Leonard Fournette - 2.12
Christian McCaffrey - 3.06
Dalvin Cook - 4.02
Joe Mixon - 4.04
All of them are higher than the 4 you listed.
The 4 you listed aren't even close being drafted as high or "Hyped" as you so put it. I looked at those years ADP and this is where MFL had them going, along where they finished their rookie years in PPR format:
Todd Gurley - 9th in PPR in rookie year of 2015 - MFL ADP 5.07
Bishop Sankey - 39th in PPR in rookie year of 2014 - MFL ADP 6.06
Derrick Henry - 45th in PPR in rookie year of 2016 - MFL ADP 8.10
Paul Perkins - 60th in PPR in rookie year of 2016 - MFL ADP 13.02
Todd Gurley was a top 10 FF RB, not sure what you want more from a 5th round pick. Sure last year was a disappointment but his rookie year wasn't.
Bishop Sankey if I recall was at the top of a very bad RB class, he was over drafted because of it.
Derrick Henry had many people upset of where he landed because he had a workhorse in front of him, but still did will in a very limited capacity.
Perkins was a late round flyer, not sure what you expected from him but no one had any real expectations for him in his rookie year.
I still don't really understand what you meant, if I got it rwronf I'd love to hear what you really meant.