keep looking through your anti-Taysom maligned glasses, but I don't get why you are so determined to prove why you dislike Taysom so much.
And I do agree that it takes much more than athleticism to be a good QB, with the guys you mentioned (Roth, Brady, and Manning) having intelligence, vision, leadership skills, competitiveness, grit, and determination, things that Taysom has shown to have in abundance. However, the guys you mentioned have also all spent some significant time fighting injuries as well, so I'm not sure why you wouldn't write them off like you do Taysom.
As far as accuracy, the reality is that Taysom had a better completion percentage his junior year than John Beck, Ty Detmer, and Steve Young did in their junior years - look it up. And that was clearly with an almost non-existent TE presence, a boon to almost any QB, a poorer receiving corps in general than any of the other three had, and a significantly more suspect / porous Oline than any of these former NFL QB's had to facilitate such numbers.