Thinking more about the '93 team vs the '05 team.
The '93 team had better depth(which has been mentioned) but if this hypothetical matchup was just one game i think the '05 team would have a real good shot at running and shooting the '93 team out of the gym like they did everyone else during that era.
The Quentin Richardson vs Majerle matchup is interesting because both guys had good size, could post up smaller guards and shoot the 3ball. Majerle has the advantage defensively but QRich was a better pure shooter.
KJ vs Nash. Both could create their own shot and create good shots for their teammates. Nash has the advantage in pure shooting and creating something from nothing though. KJ was not great defensively but he wasn't bad either(like Nash). I think KJ was a better all around PG but Nash would give KJ trouble IMO.
I would give the '05 team the overall advantage in the backcourt.
Barkley would draw Stoudemire as a defender, and the taller, lengthy guys like Stat always gave Chuck fits in the post...but MVP Barkley would be able to either get his or find cutters inside better than Stoudemire would on the other end IMO. Barkey was a much better passer out of double teams than Stat(and Amare was no slouch as a passer).
The '93 team could throw Miller, West and Barkley at Stoudemire on defense. Who besides Amare and Marion are you going to stick on Barkley? One of them would probably foul out. Lol.
Marion was a better one on one defender than both Ced and Dumas, but the rotation of Dumas and Ced at SF was a beautiful thing. Ced cleaned up the garbage underneath with his offensive rebounding(much like Marion) and Dumas was a tough matchup for anyone when his jumper was working.
When you consider that Amare and Marion would have to deal with Barkley down low and Chambers outside i give the advantage to the '93 team up front. The '05 team had trouble vs teams with a low post presence...so did the '93 team, but when you consider the depth and guys that Westphal could throw at Stoudemire it would be tough on Amare.
In a one game matchup i think it could go either way, but in a seven game series the '93 team wins every time because the '05 team relied upon their amazing shooting, transition and speed. The '93 squad ran everything from the inside-out via Barkley in the halfcourt, but could also run you out of the gym with the 3ball. The '93 teams depth and bettermatchups up front would wear down the '05 team over the course of a long series.