I think you can see that certain teams got hot while others were cold all season. Orlando's entire lineup for instance, was down -16 WAR between observed and predicted.
Doh's entire lineup was +10 WAR between observed and predicted. There are various ways to explain that. Either doh is good at making sure his players are in the right spots for them to succeed and Orlando is doing a horrible job, or Doh's team got hot and Orlando's got cold, or a little bit of both. Given the fact that Doh and Orlando are both experienced owners with very good management track records in the league, I'd guess Doh's management played a part and luck added some more and then Orlando just got screwed.
When you look at my two major under performers (Caden Trail and Brandon Marsh) they literally spent almost the entire season in "cold streaks." I'd bench them in favor of hot players for a while, but even when I'd try to ease them back in they'd go cold again and again.
I try very hard to platoon guys an not have them in bad positions. I don't play guys out of position (this is absolutely killing certain guy WARs). I don't hit guys like Over vs. LHP. It's probably part of why I was +10 WAR. I've posted this before but Brito is the perfect example. Plays in the field and posts a -3.6 WAR which was by far the worst in '48. This year I think he was 0.1 or 0.2 but was a HR every 17-18 ABs which is damn good.
I'm also not sure when you get the ratings but Gomez' ratings were better than in your chart (that guy is a 5+ WAR player) and I got a couple other guys like Inonu, Juarez, Sauce who were approaching their peak. The only guy I thought had a fluke year was Farid. He'll never do that again. Although again your ratings system had him as a 1 or WAR player and he's always been above that because of his defense. I don't think Larking will as well.
I also maximize LH batters which I think gives a boost for a few reasons primarily my ballpark.
Rest helps a bit. And I pay attention to certain personality traits/keeping guys happy a lot more than I used to. Maybe that's a minor boost? I'm not really sure.
I've always probably cared about my roster 1-25 (i.e. I want my fourth guy on my bench to have a specific role and start 50+ games) more than any other owner and the last few years I've been trying to get every little edge in the game. The league and owners have gotten too good.