Last year when he was very high in QS%, quality starts were overrated. This year when he's low in them, they're very relevant. Four of his starts were fairly close ( 5.2 IP--3 ER, 7 IP--4 ER, 6.2 ER 4 ER, 8 IP 4 ER), and two were 6 IP 4 ER outings. Any of those starts should win games for a team with this kind of offense.
SS, you're always advocating for pitchers that will go more innings and throw more pitches. Lackey is that kind of guy.
The offense has a bad habit of taking some nights off. They rarely ever take the night off when John Lackey is pitching. I think there is a value in a pitcher that the batters are really fighting for, because they know what he's going through. I know the sabermetric guys will argue that logic, but I have heard atleast five or six different members of the Red Sox that have publicly had Lackey's back throughout his personal issues.