They are all high scoring teams that are involved in high scoring games which help pad offensive stats.So the Pens, Lightning, Bruins and Caps all play pond hockey? The Caps and Lightning both allowed more goals than the Leafs last year.
And more ice time in general, he's one of the best 5 on 5 players in the NHL with tough deployment as well. It doesn't matter what circumstance he's out there for, he's still going to produce. Playing more in tight games also gives him the chance to pick up EN goals/assists to bump up his stats.
You guys are so set on displaying how crippling Matthews situation is you forget how good he has it too. When your team scores 275 goals a year, your best players will rack up points.