From my 20 years of watching the NFL, I think EJ has looked very poised and has played well this season fr a rookie. Obviously he has had struggles (jets and Pitt game), but all in all I'm happy from what I've seen. The major blow that I fault him for was taking the hit in Cleveland and setting back the season.
I actually saw EJ play a lot during his college career, and his development really never impressed me from his freshman yr to senior yr (seemed like a very athletic but inaccurate passer). Ever since that college all star game though and into his rookie year, he seems to have greatly developed as a passer.