I doubt it and that 2 different statement someone can be a bit of even quite the defensive liability and can keep a team from being historically bad if he his good enough offensively.
When Karlsoon was on the ice the Sharks pretty was getting scored against at their worst, despite Karlsson having the easiest by far deployment in term of zone start.
[TABLE=collapse]
[TR]
[TD]Player[/TD]
[TD]TOI[/TD]
[TD]GF/60[/TD]
[TD]GA/60[/TD]
[TD]GF%[/TD]
[/TR]
[TR]
[TD]Erik Karlsson[/TD]
[TD]
1667.8
[/TD]
[TD]
3.45
[/TD]
[TD]
3.45
[/TD]
[TD]
50
[/TD]
[/TR]
[TR]
[TD]Jaycob Megna[/TD]
[TD]
812.4167
[/TD]
[TD]
3.32
[/TD]
[TD]
3.1
[/TD]
[TD]
51.72
[/TD]
[/TR]
[TR]
[TD]Marc-Edouard Vlasic[/TD]
[TD]
1121.733
[/TD]
[TD]
2.41
[/TD]
[TD]
3.26
[/TD]
[TD]
42.45
[/TD]
[/TR]
[TR]
[TD]Matthew Benning[/TD]
[TD]
1205.583
[/TD]
[TD]
2.29
[/TD]
[TD]
2.89
[/TD]
[TD]
44.23
[/TD]
[/TR]
[TR]
[TD]Mario Ferraro[/TD]
[TD]
1253.767
[/TD]
[TD]
2.01
[/TD]
[TD]
3.45
[/TD]
[TD]
36.84
[/TD]
[/TR]
[TR]
[TD]Radim Simek[/TD]
[TD]
581.95
[/TD]
[TD]
1.65
[/TD]
[TD]
3.09
[/TD]
[TD]
34.78
[/TD]
[/TR]
[/TABLE]
But complexly in his own tier offensively (Megna being is most common D partner here), Megna had an abysall 8% GF percentage when he did not play with Karlsson at 5v5 last year, vs 58.67% when he played with him.
So much that made it by far their best player, at least result wise.
I do not think the way he play that many doubt increase how many goals his team will get scored, he make a lot of things happen both side, more so that maybe any other player of his generation.
At 5v5 last season despite playing "only" 41.8% of the Sharks minutes, they scored 57% of their goals when he was on the ice and 44% of their goals against them.