In a vacuum I would take RNH, as his scoring is more proven, and he's proven he can be a regular centerman. He's played a good chunk of time with McDavid this year, but generally plays with scraps without him, while Lindholm plays with Gaudreau and Monahan the vast majority of the time. I don't know if generally it's a massive linemate difference, but it's pretty clear the Calgary top line has been running hot at an unsustainable rate, and fans are getting a little ahead of themselves. Lindholm isn't going to continue on this pace (nor is the rest of the line), as his individual and on-ice shooting percentages are both off the charts. Normalizing those puts him back around RNH's point totals, who has largely sustainable underlying numbers. I would call them pretty even offensively should Lindholm be able to keep playing like he has (but at sustainable rates), but until he's shown it for longer, I would still give the edge to RNH. Defensively and in possession I think Lindholm is better though, so if he can maintain his offensive play (again, the sustainable version) I would put him ahead. Not yet though.
For the Canucks though, I would take Lindholm, because I like him as a winger more and I think he would be a great complement to either Pettersson or Horvat.