ESPN added more fuel to this fire by showing comparison of the two. Irving had an amazing first game, putting up 50 points in a Nets loss. Kemba, on the other hand, didn't have his most memorable performance.
Yes, Kyrie clearly outplayed Kemba, but it's only ONE GAME. Is Lauri Markkanen better than Anthony Davis because he scored more on Wednesday? Of course not.
The NBA season is 82 games long with a ton of ups and downs for every player and team. So to try and make conclusions on Walker as the replacement for Kyrie this early is completely nonsensical. Let's wait till December or January, see how the Nets and Celtics are performing, and then have a discussion not just based off stats.