While I also believe E Kane isn't likely a 80 point guy your facts are wrong.
E Kane 61 GP 40 pts with BUF 17-18
E Kane 17 GP 14 pts with SJS 17-18
Straight up looking at his SJS numbers puts him at a projected 67.53 pts on an 82 game season. He's in his prime, able to play a more offensive role because the Sharks aren't as bad defensively as the Sabres. 80 points isn't out of the question, though I'd believe 60-65 is more realistic.
And with Chicago's regression, it's not obvious - P Kane could easily be a 70 pt guy and never hit 80 again. The hawks defence was lacking to say the least last year, Crawford may never play the same if his vertigo doesn't disappear over the summer which means P Kane would actually have to play a more defensive role instead of being a offensive monster going forward.
My facts weren't wrong though, I wasn't talking about how he was "just as good" with Buffalo, I was pointing out how badly he did with Buffalo once taken off the EIchel line. Going from 19 goals and 36ish points in 38-39 games or whatever it was to 3 goals and 3 assists in his next 21 when with OTHER good players like O'Reilly and Reinhart/Pominville is a huge drop off, and showed he was relying on the top center. Especially when you consider Eichel went to above a Point Per Game when KANE LEFT his line, suggesting he was actually hurting Jack's production.
Then he goes to the Sharks and plays with two other great centers and does well. Not surprised. Such a small sample size, and the Vegas series he dropped off and that's all I was ever saying here.
I didn't mean to suggest he did just as well with Buffalo, if anything I was pointing out how bad he did with the Sabres after the fact.
If I said such a thing I didn't mean it whatever way you interpreted it, I mean it how I'm explaining it here.
It might sound like I'm trying to pump my players tires but its because I'm a fan of him/them that I can recognize such a thing where-as people who don't follow him just see "Oh, now He's on a GOOD TEAM, he's going to be AMaaaaazing!!!"