For the next 3 years? Majority of GMs would take Seguin, the better player. You Leafs fans need to chill over Matthews lol he scores most of his goals the same way JVR does yet you hate on him half the time. When a player is heavily relied on on his team, he will usually put up more points or goals than expected, but it doesnt mean all of a sudden they're god-like and better than Seguin or other players who have been consistently good for many years now. Look at MacKinnon and Hall this year as examples. Doing much better than they typically would because they're having to carry their teams.
I think you have lost track of the original question.
Ok so Seguin is the better player despite the stats showing Matthews is better defensively and their offense is almost identical. Hmmm.
Let's say Seguin is better because he is more proven, which seems to be the only reason to think that but whatever...
So the 2nd year player is unlikely to improve in the next 3 years to be better?
It's kind of like picking stocks One opened low and eventually leveled off at a dollar after a few years and seems set until decline, the other opened higher, met the others level point in his 2nd year and has peaked?
Only on HF would people have these opinions and take themselves seriously. No logical person would conclude based on the current evidence that Matthews will not be the superior player within that 3 year window if he isn't already.