Aikman had Michael Irvin. Granted, a HOF talent. But who were his other receivers? Were they special? Outside of Novacek, I'd say no. While Romo hasn't had a Michael Irvin, he has had some very good WRs to work with. He's also had Jason Witten from the jump.
And while Aikman had a very good line in the middle of his career, his first couple years and the last few they were horrid. Which directly led to his early retirement. Romo has had some pretty good Olines in his career, also.
The only clear outside advantage Aikman had over Romo is coaching. And as far as your stats go, Romo plays in a vastly more pass happy scheme. If Aikman had been asked to throw more, don't kid yourself. He'd have been perfectly fine. He passed early to jump on a team, (was there a more deadly combo than Aikman to Irvin? Maybe Montana to Rice) then was asked to hand the ball off to one of the most devastating, methodical running attacks the game has seen to bleed them to death.
Either way, I'm done. You wanted to play what ifs in these last couple posts. That's fine. But no matter how you shake it, there is no what if when it comes to talking how DBs played 30 years ago. They actually DID play that way then.