I'm not sure who KtG is, but I'm The Dean. Not exactly sure what you are referring to. But Trent was fairly accurate early in his career. Up until his injury I recall he was accurate on short and medium routes, and decent on deep passes. Once he came back from the injury, it was clear, over time, he was very reluctant to pass to WRs unless, and until, they were totally wide open. The combination of his loss of confidence post injury, plus poor offensive line play (not to mention some bad play calling), led to his being a rather impotent QB.
If there is something more, than I'm not certain what it is. But have I been wrong about players in the past? Of course. Who, being honest, hasn't?
BTW, one of the problems I see a bit with EJ is his reluctance to throw to guys before they are open. I think he may be able to overcome that as he gets comfortable with his WRs. I'm nowhere near positive that will happen but I am wiling to give him a shot.