Is this a fair Trade for Garnett?

[KB21]

DerMarr would have brought a defensive presence to the team as well. A guy who works for the Grizzlies that I was talking to recently stated that he thought the Hawks were going to do well this season, but he thought the keys were going to be the defense that Theo and DerMarr gave the team. He said he thinks that injury to DerMarr hurt this team more than many people realize.