RG3 is a never was as QB, he was an athlete who had an arm, nothing more. His rookie year he played in an offense that was very simplistic, and gimmicky. Most of his passes were only 5-7 yards, and they relied on getting the ball to guys in space. That is the only reason why his completion percentage was near the 70% mark. The read option was also a relatively new concept in the NFL. Teams were over committing to the run, allowing Griffin to run all over defenses. As a pure passer he was always terrible. That is why we are seeing his struggles now, his athleticism isn't what it was and he's forced to stay in the pocket more. That an makes terrible decisions on his runs.