As for the RB bust rate, that includes the time when teams routinely picked 3 or more RB in the first round.
http://www.rantsports.com/blog/2012...translates-from-college-football-to-the-pros/
That has breakdowns by top 10 and overall first round. Teams picking those 4th and 5th RB brought that 70% success rate from the top 10 way down. Teams have adjusted since then and started valuing OL more and RB less. The only reason why we are in the conversation about getting a shot at Gurley and Gordon is because of the paradigm shift.
Not sure I'm buying what you are saying. Even the site you've listed shows only 14 out of the 36 RBs listed earned a "yes" grade (several maybes, though), which means it's risky business anyway you look at it ... just like the draft is for any position.
We've discussed recent drafts. We've discussed historical drafts. And they all point to that same thing. It's just the way the draft is. And as I've said, I'm OK with that. You have to deal with it as it is, not as you'd like it to be.
If Gordon or Gurley is there when we pick at 27, I'm fine with us taking them, knowing that there is a fairly high probability that one of them will bust. If one of the second-tier backs is there when we draft, I'm fine if Dallas chooses one of them, knowing that the Cowboys have done their homework AND there still a pretty high probability that one or more of them will bust.
If Dallas wants to trade a third- or fourth-round pick for Peterson, I'm OK with that, knowing that his age and with his wear and tear that there is some degree of probability that he will bust. The only thing I like better about that Peterson route if it becomes available to us is that it allows us to use those top two picks on other positions at a point in the draft when there is a lower probability that they will bust as well.
I do not like at all any route that has us waiting until the third round of the draft or lower to draft a running back because of the higher bust rate at a position where we have a bunch of bodies but none who have proven they can get the job done this year as the lead back. Whoever the new guy is will have questions marks as well, but I do believe if we add either Peterson or a first/second-round back we have a higher probability of finding that lead dog.
We lucked into Murray in the third round, and some seem to take that as proof that we can easily find another one like him then when there is a much higher probability that we won't. People tend to make the exception the rule.