Yes and no. The 13 games with those teams are very important, but the other 26 are too. Going 7-6 against Baltimore and Toronto and playing .700 ball (or whatever it takes) in the other games is a perfectly acceptable way to get there.
Owens is just the latest chapter in the Sox long-running failure at drafting and developing good pitchers. Hopefully Kopech and Groome can reverse the trend a little.
Why does it matter? Calls for him to be DFA'd were not unjustified. He's still having a crap season, 13 million for a 5.42 ERA and a 4-11 record in his starts. Luckily we're salvaging a little from him lately, but who knows how long it will last or when he will get injured again.
Ross, of course, didn't squeeze out Salty until the last 3 games of the WS.
Gomes only did one thing in the entire postseason, and it didn't happen until Game 4 of the WS, but it was enough to justify the extra AB's Farrell gave him.
$13.5 mil should get you a 2 WAR player. Clay is a 0 WAR player this year. He really shouldn't be handed $13.5 mil for his 2016 performance. Exercising his option would really be betting upside.
My guess is that the voters do look at WAR for position players now, but they probably ignore WAR for pitchers. Based on fWAR for example, Price is ahead of Porcello.