Any idea how they set the baseline for expectations?
Expected is another way of saying xG. 'Above expected' is xG differential.
xG is shots+shot quality. A point blank chance would result in a large xG number, a flip in from the point would not. This correlates more strongly with outcomes than raw totals like Corsi or Fenwick. It only recently became a thing due to better tracking technology.
Veg and Ingram have a combined 17 goals saved above expected, so they're part of the reason. Offense wise, the Coyotes are barely above expected for the year (1.29 total), so the offense is largely WYSIWYG. There's not an obvious emphasis on attempts like Carolina or Florida. There's not a lot of shooting talent like better teams.
They competed most nights, got decent goaltending, and executed well in their few ozone chances. Tourigny avoided getting caved in most nights like the Sharks, Ducks, and Columbus.
One stat that stands out: very few dzone giveaways. AZ had 280, good for 5th, Montreal had 642. 10th in hit share.
The only thing keeping this team bottom 10 is penalty share (worst) and faceoffs (3rd worst).