I think Siemian‘s instincts are naturally a little more careful with the ball. Jameis had to actively remember to not take dumb risks, which I think slowed him down going through his progressions because he’s an aggressive QB by nature. Siemian doesn’t throw the deep ball as well, but he has better touch in the short distance throws. It’ll be interesting to see if he can get more out of this offense.
I think Trevor’s quick recognition of the defense, and ball placement, is going to be a pleasant surprise. He appears to be very comfortable in the offense, even coming in cold last week, with only about 2-3 snaps in practice.