Can someone explain how Shanahan can justify how many games he's suspending players for?

I don't get it. I thought they seemed slightly random before but the latest two takes the biscuit.

Bourque gets a boarding call on Seabrook. He gets a major and a misconduct in the game. Seabrook left the game but is apparently not injured. Bourque has not been disciplined before. 2 game suspension.

Lucic gets a boarding call on Rinaldo. He gets a major and a misconduct in the game. Rinaldo was not injured. Lucic has been warned, fined and suspended before. 1 game suspension.

Both decisions handed out on the same day.

How does that make any sense?

The message he's sending is that Leino's accidental elbow on Read is as bad an offense as blatantly boarding a player if you're Lucic, but not if you're Bourque? Also ignoring the fact Leino and Bourque haven't been disciplined while Lucic has?