The Nemesis
Semper Tyrannus
Cool article. Phrased in a bit of an awkward manner though, I believe the quote you attributed to Donaldson actually comes from Jeff Sullivan. Their actual Donaldson quote in there states the opposite: "When you have guys behind you, they’re going to be more apt to make mistakes in the strike zone." Longoria says the same thing. And all of the pitchers interviewed say that they're more likely to pitch around guys when there's no one on first or they're not afraid of the guy on deck...except Baumgardner who says he doesn't out of pride, but thinks he's being stupid by not doing it.
Something's weird. The author's assertion here is that a hitter will hit just as well with or without protection but that he WILL walk more with protection. But even if that's true, if a hitter hits just as well regardless but also walks more, doesn't that make him more valuable?
The article says that Sullivan's findings corroborate the statement from Donaldson. He said both things in one large quote that was picked up for this piece and split. here it is in its original form:
Josh Donaldson, Blue Jays infielder: “I think it’s like this: If you’ve been around a little bit, people are going to pitch to you the way they’re going to pitch to you. But when you have guys behind you, they’re going to be more apt to make mistakes in the strike zone. They’re going to be more aggressive throwing strikes, but not more aggressive throwing fastballs. They’re going to throw their pitches, but they’re going to throw them more for strikes.â€
http://www.fangraphs.com/blogs/players-view-does-lineup-protection-exist/
As for the second part, the target of the argument isn't overall value in a way that includes all manners of getting on base. It's that changes in how a batter is attacked that can be attributed to lineup protection theories are said to lead to improved offensive production. That Donaldson will get more hits, more HRs, more runs, and more RBIs because the threat of Bautista/Encarnacion behind him give him more good pitches to hit. The evidence shows that at best he might get some more walks. But, as is said at the end of the piece:
"While walks are good for an offense, the idea of protection rests on the idea that the first of the two great hitters will receive better pitches to hit. In this regard, Tango suggests that lineup protection does not exist: protection "merely increases the ratio of walks to non-walks without significantly affecting how well the hitter performs if he isn’t actually walked."