your response is pointless here. You are misunderstanding what I am saying. If neighbors is there, defenses will know that he is the main FB..and most, if not close to all the time, will be there to plow a hole for Hilliard (OBVIOUSLY IF he gets the ball). HOWEVER, That is THE only possibility. We don't give the ball to Neighbors really, and the threat of Neighbors rolling out and catching a pass is even LESS of a reality.

Therefore... defensively, apart from receivers, the LB's will follow Hilliard and have more secondary tackle support whether he runs up the middle or rolls out for the possibility of a catch.

In THIS 2 back scenario...even if it looks like a run up the middle...The probability is split in half of Hilliard having the ball. So defenses are kept honest and they are forced to cover both with equal intensity and presuming that EITHER hilliard OR Fournette...has the Ball. Reason is that here, not both will hit the same hold, Hilliard may come through Hole #1, but may not have the ball, whereas Fournette, who gets teh ball, may go to hole #2 = LB's are split up a bit giving us a slight edge in terms of time of LB tackle help and thus giving a marginal gain in yardage gained for each such carry. But, i agree that if they both look to go up the middle....yes, you are correct that they for the most part will defend same as if neighbors was there = try and stuff the run as much as possible.

HOWEVER...the BIGGEST benefit on this package lies in the scenario where either one of them goes up the middle, while the other rolls out. In the Hilliard/Neighbors scenario, ur LBers are focused and will come up to stop the run = more # of bodies over a small area + focusing on the small seams made between OLine. Here, the LB's or DB's assigned to either HIlliard or Fournette have to follow the player to the periphery while the play is being developed = more space down the middle.
a) IF we run, that's 1 body less in the middle , or at least delayed in getting back to the middle to stop the run = immediate increased efficiency as there is a higher probability of the run getting a yard or so more at least.
b) Same with if we throw, the LB's are still going to be kept honest and keep someone in the middle in case Fournette or Hilliard runs up the middle. Since both are gifted backs and able to catch, whoever rolls out, even if they are covered have to deal with mainly the man covering them initially. LB help to stop them once its thrown will be slightly late as compared to if it was only if only Hilliard was on the field with neighbors as more LB's would be aware if not follow him to the edge.

So yes...they will not...or at least SHOULD not just aim to stuff the run as if its Hilliard/Neighbors. Your deduction is looking at only 1 perspective...that both run up the middle and run through the same hole. If we go with scenario #2,#3 or #4, and they treat it like scenario #1 like you are treating it.....then the marginal gain I am talking about immediately becomes a possible big-yardage/touchdown threat with the caliber of backs we are talking about.

This kind of scheme is highly beneficial against ALL teams. Results in modest increased effeciency against even well coached and disciplined teams like Wisc or Bama..but play HUGE returns if the defenses are not consistent and methodical in keeping their assignments.