lets compare auston matthews and nathan mackinnon!

matthews' first four years (282GP):
G: 158
P: 285
P/60: 3.23
GAR: 54.5
WAR: 10.8
xGAR: 80.5
xWAR: 15

mackinnons first four years (300GP):

G: 75
P: 206
P/60: 2.24
GAR: 41.2
WAR: 7.8
xGAR: 25.3
xWAR: 4.8

so anyways,

lets do at even strength thats even more fun!

auston matthews since entering the league at EV (282GP):

113 G (1st)
1.54 G/60 (1st)
190 P (10th)
2.59 P/60 (7th)

nathan mackinnon in that same time period at EV (307GP):

81 G (10th)
1 G/60 (41st)
196 P (7th)
2.41 P/60 (19th)

i'd argue nathan mackinnon has not been the more valuable player even in the last four years of his rise to elite-ness

so in conclusion if you can get past the fact that he plays for the leafs, you should probably start your franchise with auston matthews not nathan mackinnon