Krejci only has 4 more goals then the 4th line goon so I'm really not seeing your point. I suppose if McLaren can keep up that 30% shooting pctg we should question the offensive abilities of a few of our top 6... common sense dictates however that isn't likely (not that that has ever stopped anyone here before).
Lucic has 13 more points, 66 more hits, and can be trusted on the ice for roughly 13 more minutes per game by his coach. For a guy who is supposedly intimidated playing against teams with goons he sure took a healthy run at Leafs players last night (how NHL.com records hits I'll never know, I counted 3 solid hits in the first period alone from Lucic on Franson, Fraser and Kulemin).
That line is completely ineffective right now and that falls on all three. None of them are making clean passes on the breakout, none of them are winning battles on the boards, none are making smart plays through the neutral zone. The line is in a funk of epic proportions.