The Raptors gave us fits last year too.
They are a difficult team for us to match up against. Anunoby, Barnes, & Siakam all have excellent length and strength. A SF/PF/C combination of Murray/Barnes/Sabonis has the strength to compete (maybe not Murray since he’s still working on that as a young guy) but they are severely outmatched length wise (not to mention our guys aren’t really the “high flying” type).
It’s going to be important for Murray to continue to get stronger (not worried) and his length at SF is good/above average (not elite). Sabonis will always be ground bound player with below average length at C. Having a PF who has the size/length/athleticism of an Anunoby, Siakam, or S. Barnes would go a long way to help make our frontcourt more formidable against more matchups.
Having said that, if you’re intentionally putting out a three 6’3” & under guard lineup while the opposing team has Anunoby, Barnes, & Siakam on the floor, you’re probably asking for a world of hurt.
I’m not really going to criticize Brown for that decision. It’s preseason for gosh sakes. He probably just wants to get his guys some burn and wants to see how different lineups fair against different matchups. It’s less about winning and more about gaining useful information about your team so you’re better prepared for the real thing.