I've never been in the camp to argue Romo over Aikman or Staubach, but regarding turnovers, I think the situations were very different..
The irony is that Aikman had a higher interception rate than Romo. He also had a worse QB rating in close, late-game situations.
The difference was mostly that Aikman's teams were great on offense AND defense, so the pressure to score (or lose) was not so constant
I also think Romo is a different type of quarterback. Airman, Marino, Brady is a different breed of QB than Romo, Young, Elway. The Aikman type QB is awesome when everything is clicking. The Romo group of QB's is good at making things happen if the play breaks down, improvising, scrambling.
If I have to pick a player right now to win the Super Bowl I would go with Aikman. If I have to pick a player for the 2:00, 4th qtr 2 timeouts, game winning drive in the Super Bowl I'm going with Romo. Troy was not that great at bringing teams from behind and winning games on a 2 minute offense drive. He didn't have to. we were usually way ahead. Romo has had to put the team on his shoulders more often, for better or for worse. Aikman couldn't do that or at least he didn't have to because the talent of the teams throughout their careers were vastly different. Aikman struggled a bit towards the end of his career when the offensive line started to lose talent, Irvin retired, Novacek retired etc and we were an 8-8 team in 98 and 99. That's why I get defensive when the media blames Romo for us being average. Well Aikman was the man and one of my favorite all time Cowboys but his teams were 500 when the talent diminished. Just shows you that even a great, first ballot HOFer can't overcome bad coaching, bad drafting, and injuries.
But to answer the original question, I have to give the nod to the 90's team as being better. No clue how Zeke will do, Irvin was better than Dez, Aikman was more consistent as long as everything went well, Novacek was in the prime of his career, Alvin Harper was WAAAYYYY better than Twill.
So one parameter for this post needs to be what 90's team are we talking about? 92 or 95. Because there's a big difference in those teams. 92-94, absolutely no way is our offense that good. 95, we may have a discussion. 96-2000 season- I'll take our present offense over that one, no questions asked