not arguing about what the rules state, just that I don't like the result: Team benefited (either by no foul, or the slowing of the linebacker) by what would've been a BBW but for the defender's awareness and ability.
I don't want to tell the linebacker, "You jumped over him to save your legs therefore no BBW foul, although the jump slowed you down and caused you to let the RB get outside and run for 80 yards. Apparently, your team would've been better off if you allowed your knees to get chopped in half."