That does not rule out QBs or RBs. Saying we want a fit means we won't pick guys who would be best in a WCO offense versus a vertical passing game or we won't pick a LB who is projected to be best in a 3-4. But as you say, I doubt that a QB or RB would be BPA at 14. The whole issue is interesting though because he said specifically that we would go BPA regardless of need. He said you get your needs met in free agency so you can pursue BPA in the draft. He specifically mentioned when the Giants went with Pierre-Paul, they didn't need a DT/DE but they picked him because he was BPA.
postion matters though....did for JPP. You can stock pile DEs as you need at least 2 on the field every down. Important position. They then don't have to pay out a Charles Johnson contract. For example, they could play hard ball with Osi.
If Carolina had the number overall last year.....they could of drafted BPA (but still simply not put Luck or Griffen on there board at all). Trade or go BPA excluding QB.
You are taking to strict and literal meaning of BPA. Teams who draft BPA still make exceptions and take guys off the board.