This thread has been enjoyable and while we've tried to be objective it is difficult to separate personal preference, especially when discussing some of the great players in team history. I've seen the careers of all three. I've tried to objectively look at them through 14 categories:
Category
Staubach
Aikman
Romo
Size/strength
2
1
3
Arm strength/velocity
2
1
3
Accuracy (all throws)
3
1
2
Release/mechanics
2
1
3
Best deep ball
2
1
3
Ball handling/play action/screens
1
3
2
Improvisational skill
2
3
1
Mobility/escapability in pocket
2
3
1
Scrambling/running
1
3
2
Field leadership
1
2
3
Grace under pressure
1
2
3
Big game performance
1-T
1-T
3
Mental toughness
1
2
3
Physical toughness
1-T
1-T
1-T
Totals
S = 22
A = 25
R = 33
Average Category Rank
S = 1.57
A = 1.79
R = 2.36
Trying to be as objective as I could be, the totals/average above end up just as I would place the QBs in order of greatness: 1. Staubach, 2. Aikman, 3. Romo. And, as the tallies turned out, they are in agreement with my opinion that I have long held, namely that Staubach is the best QB in Cowboys history, and that the distance between Staubach and Aikman is closer than the gap between Aikman and Romo.
This is just my take and you guys can roll with the categories (and others you might come up with) and rankings.
In a big game against a great opponent, give me Roger, then Aikman.
(I tried to import a table from a Word.doc but could not. I apologize for the format and my lack of technical skills.)