MacKinnon. More chances, plus...
McDavid is fantastic but his individual success has yet to show it can be the driver for a team’s success.
MacKinnon is much the opposite. He has a notably weaker argument for better overall player but has shown to consistently drive team success as his individual success occurs.
I know it’s a team sport, but your centerpiece is a huge part of that. Having MVP statistical seasons while not sniffing the playoffs is a red flag
Especially in a situation where you have only four shots with them. Not only is it nearly double the chances more significant, but I feel MacKinnon has been better at elevating his team success relative to his individual success even as a worse player in general.
My opinion, of course.