Add in Metu, the bench is 1-9 for 5 points. Memphis bench is 9-17 for 23 points. That's your difference.
For what was supposed to be this team's strength, it's been the biggest disappointment by far to see that unit fail so hard this year. You're getting everything and more you want out of the starters, including a classic HB game (12-3-3 on 5 shots), but the bench needs to follow at some point. Too much invested for it to be this poor.
Brown rotations didn't help either, but I can at least appreciate he's acting with some urgency.