As much criticism as Big 10 officials take, watch an NBA game and see how many illegal screens are missed. It doesn’t make the job of the defense any easier.Agreed. I used to think there was no defense in the NBA, but that was out of ignorance and I've watch the Bulls all season this year due to Ayo.
Great shooters everywhere in the NBA, which makes defending the pick-and-roll so difficult. I also actually think they call a ton less ticky-tack fouls on the interior in the NBA than they do in college, so the defense is better near the hoop.
However, the #1 reason for higher scores is the shorter shot clock and a 48-minute game instead of a 40-minute game.