I'm sure this will be an insightful thread, and not one where the same things are regurgitated from the other thread.
Anyways, here's some crazy stats that kind of shows that Mackinnon seems to be impacting the Avs more than Kucherov is to the Lightning. (Numbers not counting last nights games):
Now obviously Mack plays more at 5v5 which can lead to better numbers, so here are the rate stats breakdown
And now the mind-boggling one. Goal differential at all strengths relative to the team (yes this will be heavily influenced by the fact that Mack plays PP but not PK, but it's the same for Kucherov. Also Tampa has a better PK% than Colorado):
So what Kucherov is doing, being so many points ahead of his next closest team is impressive, Mackinnon seems to be impacting the Avs when it comes to on/off splits.