I'm a big believer in big school drafting. Not only the competition they play against, but the spot light, big TV games, lots of pressure. Being great has as much to do with talent, as it does intelligence and guts. But again, you can find talent anywhere, just make sure you have the best scouting team in the NFL.
The pressure of playing in Dallas is greater than many other places and many games are pressure packed considering how many national games the Cowboys play in.
In fact, we seem to do better with small school players after the draft simply because there is little to no involvement from the usual final decision maker in the war room. We might "find the talent", maybe he is not picking them.
Plain and simple here is the Jerry Jones track record drafting small school players since Johnson departed:
380J.J. WilcoxDBGeorgia Southern
4114B.W. WebbDBWilliam & Mary
4135Matt JohnsonDBEastern Washington
4110David ArkinGMissouri State
5143Josh ThomasDBBuffalo
4126Akwasi Owusu-AnsahDBIndiana (PA)
7234Sean LissemoreDTWilliam & Mary
369Jason WilliamsLBWestern Illinois
375Robert BrewsterTBall State
6167Erik WaldenDEMiddle Tennessee State
4122Doug FreeTNorthern Illinois
7212Courtney BrownDBCal Poly-San Luis Obispo
7211Pat McQuistanTWeber State
111Demarcus WareDETroy
6208Justin BeriaultDBBall State
7216Patrick CraytonWRNorthwestern Oklahoma
6186Zuriel SmithWRHampton
5168Ralph HunterDBVirginia Union
6208Deveren JohnsonWRSacred Heart
7207Colston WeatheringtonDECentral Missouri State
4109Kareem LarrimoreDBWest Texas State
4132Hundens ZellnerDEFort Valley State
6193MarTay JenkinsWRNebraska-Omaha
6188Izell ReeseDBAlabama-Birmingham
365Dexter CoakleyDBAppalachian State
4127Macey BrooksWRJames Madison
237Kavika PittmanDEMcNeese State
394Stepfret WilliamsWRN.E. Louisiana
5157Kenneth McDanielGNorfolk State
30Darren BensonDTArkansas State
392Charlie WilliamsDBBowling Green
50John DavisTEEmporia State
246Larry AllenGSonoma State
Exactly three could be considered exceptional players. There are a couple of possibles, like Crayton and Free, but by and large it is a wasteland.
It also seems to be getting worse as the years go by.
It is understandable how 6th/7th round choices will fail, but that still does not dismiss the poor track record.
How the team has performed taking small school players in the 3rd/4th round has been particularly horrible.