All of those guys you mentioned have better arms than Fromm.
No one has ever compared Fromm to Brady, Brees, Rivers or Manning(I assume you mean Eli because if you meant Peyton then this discussion is over).
Brady was obviously missed by the entire League but Brees, Rivers, Manning were highly touted high picks.They all graded out way better than Fromm.
Listen, you can like Fromm as a prospect(hell i liked him LAST year quite a bit)but comparing him to those guys hurts your argument because they are such unrealistic comparisons.
Considering the talent surrounding him, Fromm should have played MUCH better than he did.His physical flaws kept him from doing so and those same flaws are being exposed in the workouts.
Day 3 pick, future backup.