Nope, no bias against them non-BCS players.

http://universe.byu.edu/node/8171 - Thesis explores future of non-BCS players in NFL

To see which of the statistics were actually the most telling, Plothow included a section on how many of the players were still in the NFL after three years. He measured the statistics using college data vs. college and combine tests vs. a player’s draft number.



“About half the draftees make it to the three-year mark, so it is a good indication as to whether a player has met with success,” wrote Plothow in his study.



“Actually, the wide receivers from non-BCS schools with the same speed and college numbers are picked about 75 positions later in the draft and they outperform, on average, the BCS players 200 yards per year,” Plothow said. “And they’re 15 percent more likely to stay in the NFL longer than three years than BCS receivers are.”

I'm amazed the Jerry Rice even made it to the NFL.