You're not wrong.
"Boston had multiple scouts at both of Peavy's recent starts, and while there was some sentiment that Peavy was not throwing as well as he did in 2012, when he struck out 194 batters in 219 innings while posting a 3.37 ERA, the consensus was that Peavy represented a major upgrade for a rotation that is uncertain as to when undefeated ace Clay Buchholz, who has been on the DL with shoulder bursitis since June 8, will return."
http://espn.go.com/boston/mlb/story/_/id/9523880/jake-peavy-boston-red-sox-3-team-deal-involving-chicago-white-sox-detroit-tigers