Perkins often matched up against Erick Dampier, who is not exactly known for his strong offensive play. Big Baby is strong enough where he could have bodied up against Dampier without issue, Leon Powe certainly handled him just fine. Often however Perkins was covering Dirk Nowitzki, a match up Dallas looked to exploit whenever possible.
What is even more mind boggling is that PJ Brown registered 10 minutes of play, scoring zero points. I believe the Celtics signed PJ Brown essentially so other teams couldn’t gain his size, but the only thing PJ Brown brings to the table is 6 fouls per game, 6 fouls that should not be used on anyone not named LeBron James, Dwight Howard, or Rasheed Wallace. Brown registered a block and steal with 4 rebounds, and I think that’s pretty much his ceiling, I don’t expect anything more out him as he has looked nothing short of rusty on offense. Big Baby might not have the size to match up on Dwight Howard, but we were playing against Erick Dampier, and Baby brings a lot more offensively to the table than either Perkins or Brown.