We must first define the word "best".
If by best we meam most talented, then he's amonng the best.
If by best we mean achieving their potential, or enablig the larger goal of teamwise winning, then he's among the worst.
_ AMERICAS_TEAM _
Trent Dilfer: "Tony [Romo] has greatness in him. I think when you talk to other people that really play the quarterback position, there's a few guys that really have incredible greatness in them, and Tony is one of them. I think the issue here is he needs more help from his teammates. I think they are not nearly as talented as people say they are, from 1 to 53. I'm talking about the total roster.”