Romo's the 10th rated QB behind:
Rodgers - Okay (Top 3)
Brady - Okay (Top 3)
Brees - Okay (Top 3)
Peyton Manning-Based on injury/last year not sure where he should go. If healthy then yes Top 3 or 4.
Big Ben - Okay. Does what Tony does, which is makes more out of less support (O-Line, Running game, Receivers). Difference between what he has done and Tony is that he has had great Defense and at different times good/great O-Line, Running game, Receivers which led to Superbowls. If Tony had been the Pittsburgh quarterback in their Superbowl years could they still have won? I think yes.
Stafford - Better measurables than Tony, but would perform worse with our past Offensive lines and supporting cast than Tony has. With a good or better O-Line and supporting cast I think he is better than Tony, but with a mediocre or worse supporting cast I think Tony would do better.
Ryan - No
Rivers - No
Eli Manning - Prior to 2 years ago I would have said no (including his first Superbowl year), but he has really improved and should be above Ben in my opinion. I see him as a more experienced Stafford. If Tony had been the Giant QB could they have won their superbowls? I think they still could have won and I believe Eli would do worse with a lesser supporting cast than Tony has. With a good/great supporting cast he may have become (last two years) a better pure QB than Tony but it is close. As I tell my Giant friends, Eli has really been great the last two years. He is playing at a Tony Romo level.