Bill Cartwright averaged 5 rpg, 2.4 apg, 0.6 bpg, and 8.8 ppg across the 5 games in the 1991 Championship series.
Vlade Divac - arguably a better player, but playing a totally different role - averaged 8.8 rbg, 2.0 apg, 2.4 bpg, and 18.2 ppg.
Aside from points scored (which, let's face it, can be put down to MJ being a ball hog; a god of basketball was he, but he hardly passed the damn thing), their stats are fairly even.
Bulls centres in the nineties were tasked mostly with setting pick and go's, and they did so very well.
The Bulls' centres in the early Jordan years weren't even very good rebounders.
I think Jordan needed a centre to help him out by doing things that aren't recorded in statistics - setting screens, double-teaming on defence, etc. -, and his centres did that for him.