To summarize, Matt Duchene is one of the best players in the NHL in drawing penalties, versus committing them (+12), while Kyle Quincey is the worst (-16). What has changed recently? One is out of the lineup and the other just got back in it.
I think these lists say... something. But not the whole story. Quincey is paired with a rookie which might lead to more penalties and he's the leading defensive scorer on the team. Duchene is high on this list in part because his defensive game isn't very physical so he doesn't take many penalties. Dustin Brown, that guy hits everything that moves and has drawn 25 penalties while committing eleven. If the Kings find their powerplay, look out.