The Mavs aren't as athletic defensively as the Warriors. They also aren't as potent shooting from mid-range as the Warriors would be with Steph, Klay and OPJ. Jalen Brunson wouldn't be able to stop Mitchell or Clarkson when they're matched up. If the Mavs go small with DFS at the 5, the Jazz should be able to dominate in the paint. So on paper, the Mavs would be a better matchup for the Jazz.
However, if Steph is going to miss games, the Warriors aren't going to win a series, imo.
However, if Steph is going to miss games, the Warriors aren't going to win a series, imo.