His career OPS+ is 96 (100 is average). The last 5 years: 103, 102, 118, 97,97.
His career wOBA is .327 (.330 is average). The last 5 years: .336, .336, .353. , .325, .316.
Simply as a hitter, he's almost the definition of average. Good contact rate, decent patience, decent pop.
Phillips is an above average 2B offensively. And he's a great defender. That makes him one of the best 2B in baseball. But we shouldn't conflate all of that with the reality that he's an average hitter who just so happens to be having a very "clutch" year in a situation in which he's been given a TON of opportunities to drive in runners.
Regarding him adapting his performance to his spot in the batting order, here's how he's performed:
Split PA BA OBP SLG tOPS+ BB% K% ISO
Batting 1st 691 .265 .325 .426 100 6.4% 14.0% .161
Batting 2nd 819 .277 .320 .424 98 4.8% 12.0% .147
Batting 3rd 533 .276 .321 .425 98 5.3% 12.2% .149
Batting 4th 2400 .280 .330 .449 107 6.3% 13.8% .169[/cost]
Has he been at cleanup? Yep. A little bit. But let's not act like we're seeing wild swings in performance here. The differences are pretty much with the margin of error giving that we're talking about ~1 season in 1st/2nd/3rd and 4 seasons worth of cleaning up (that came during his typical peak years).
I think it's really important that we separate questions related to the value of a player's performance from the underlying talent driving that performance. that's where the RBI come in.
Phillips was similarly clutch last year in terms of hitting with runners on base. And yet, he only drove in 77 runs. This year he's only 3 behind that in 250 fewer PA. Should we be giving Phillips extra credit for the fact that his clutch hitting this year is substantially amplified by where Dusty put him in the order and the performance of the guys ahead of him? Not in my book. It's noteworthy that, from an RBI perspective, a high contact rate is actually really helpful. I wouldn't want/expect a patience & homers type like Dunn to drive in runs. Guys like Phillips who can hit for average but don't get on base a ton are actually pretty good "RBI producers".
As for all the other funny splits in the article in terms of home/away and so forth, if you dig hard enough you can find crazy splits like that all over the place. They don't actually mean anything. They just are.