Yes there's obviously an element of "is this his level?" to Mudryk's performances in Europe, but IMO what's far more important is that his performances in Europe show the crucial role which mental vibes play to his game.
You can tell in these UECL matches that he's feeling himself, that he's confident and buzzing and enjoying himself, and it reads in his play. That finish was so unnecessarily emphatic. That is the finish of a guy who knows he's talented. I hope he can bring that vibe into the league.