Agreed. Keep in mind, too, that if you're playing Horton, it's not like you're going from zero points to (insert amount that Horton's going to score).
This year, Jeffress is giving you 35 minutes per game and scoring ~0.17 points per minute. Last year, Horton gave you ~0.33 points per minute in the 27 minutes per game he played. So if you're giving Jeffress 10 fewer minutes per game and giving all of those minutes to Horton (along with whatever minutes you're taking away from other guys to play Horton, because Horton's probably looking at around 30 minutes a game), you're looking at, what, 2 extra points a game, even though he scores twice as much? Plus whatever other improvements you can get by cutting other guys' minutes and playing Horton. It's not a ton, but in a season where we've played as many close games as we have, even just a 2 ppg improvement is nice, even if it wouldn't have automatically flipped the script and turned every close loss into a close win.