Great post, great analysis. Thanks for the effort!
Long story short: God no. +/- is a garbage stat, but Laine had 10 goals and was a freaking -30.
Did PLD struggle? Yup. Was he injured? Yup.
Did Laine play absolutely awful in CBJ? Yup. Was he injured? *probably* yup.
PLD struggled to find his foothold, but Laine and Dubois both scored ~.5ppg.
Laine gets prime pp1 time where he's the focus, and Dubois gets 30 seconds of pp2 time.
Dubois has provided sound defensive play since day 1 even though he's struggled to put up points.
Dubois is the youngest player on the roster, younger than Stanley. Dubois oozes #1 center potential with size, and that's not something that can be passed up in today's NHL.
Besides, for every goal Laine scored in playoffs the guy would have given up 2 and turned the puck over 10 times a game. Good riddance.