Hm, I would dispute that playaction throws are easiest to make. Given our system, I think we typically threw the ball on lower percentage situations (I think this was mentioned by the commentators during one of the Crouch era games I saw, so I can't really back this up, but it makes sense). The other guys attack the open field all the time, but at least in the Crouch era it was 2nd and long, 3rd and long situations, or with the playaction, which carries at least a fair risk of interception.
Well, I think anyway...don't really know.
Although Frazier's stats don't compare, I think evaluating based on talent alone, he was a great thrower, just used in different ways. I'm not so sold on Vick as a passer, but this is a debatable point, I suppose.
Also:
Not bad for the type of system he ran. He completed 56% of his passes that year, compared to 43 the year before when he was largely injured. That doesn't say it all though, because he was also in the 40's as a freshman and sophomore, although with so few attempts.