I haven't even mentioned xGD
Is that why the devils get dominated without Bratt on the ice?
His most common centres over that time frame were Hischier and Zacha, so is Hughes getting caved in that hard without Bratt? I guess it's good that he's +GD and Connor is -GD when they're both on the ice, but the off ice stats don't seem that important. One team has adequate depth and a top 10 goalie when Connor is off the ice and the other team has a bunch of replacement level players outside of 3 or 4 forwards and a revolving door of garbage goaltending.
To me, this just seems to say:
Connor is worse against elite talent than the rest of his team is against depth.
Bratt is better against depth than the rest of his team is vs elite talent.
And then trying to conclude that Bratt > Connor on the ice despite them playing different levels of competition that is borne out by the deployment difference.