Advanced metrics and eye test don't stand up to real life performance. Trae has been good enough to be the best player on a team that made a conference finals. Mitc hasn't.
Mitc also borderline refused to give the ball to Gobert at times when they were in Utah, so I most definitely don't want him anywhere near Wemby, after literally seeing him refuse to consistently pass the ball to another big for years. Yuck.
And I don't know what "eye test" you could possibly be referring to when it comes to Mitc . He literally turned Brunson into a household name. Almost nobody knew who Brunson was on a national scale until he cooked Mitc in the playoffs when Luka was hurt. Imagine losing to the mavs...in the playoffs...when they are playing without Luka
He's "way better than Trae" but Murray dropped 40 on him
He's "way better than Trae" but Brunson became a house hold name playing against him
He's "way better than Trae" but Brunson dusted him again in last year playoffs
He's "way better than Trae" except for when he actually plays against other guards in the playoffs and they just relentlessly cook him to the point that the Jazz finally say "yeah enough of this trade this guy"