Jazz have played the 3rd most difficult schedule to this point.

Of the 14 games they have played ...

9 games have been against current playoff/play-in teams - Warriors, lakers, Nuggets, Suns, Grizzlies, Clippers, Kings (2), and Milwaukee.
5 games against teams just outside of the play in range - 2 against Dallas (win/loss), 2 against Spurs (win/loss), and 1 against Chicago (win).
Only 2 games have been played against Eastern Conference teams - Chicago and Milwaukee.

Given that their record is about where I'd expect it to be at this point. They seem to be about on par with fringe play-in teams. Surprising that they have their 3rd against the Spurs tonight already.