They didn't have a true superstar but had a whole bunch of very good players. I've only included players playing significant minutes in the following. Obviously, the Jazz are fine at the top of the roster but they really need a couple of very good secondary players.
Last year the Spurs PER's went as follows ...
Duncan 21.3
Ginobili 20.0
Leonard 19.4
Parker 18.9
Mills 18.7
Splitter 16.5
Belinelli 15.0
Joseph 14.7
Diaw 14.0
Green 13.9
This year's Jazz team has PER's as follows ...
Favors 22.5
Gobert 21.9
Hayward 20.0
Booker 14.6
Burks 13.1
Burke 12.6
Ingles 9.7
Hood 8.5
Milsap 7.4
Exum 6.2