Kemba and it's not particularly close. I think his size issues are overblown as the Jazz don't need to be big to get past the elite teams in the West, if anything we've learned that it's important to have a potential option where the Jazz can play with Gobert off the floor for stretches of the game (Favors did a great job for example), and the Jazz have the perfect pieces to stick around Kemba defensively to mask his size disadvantage against matchups with big teams.
I think the Jazz would be ****ed trying to beat a team like the Bucks, but I don't think Tobias does anything to move the needle in that regard either while also making it harder to advance through the West.