Patrick has proven to me that he does not consistently make the right decisions. There was a really good breakdown of Manziel vs. the Bengals the other day that showed several good and bad plays. The breakdown of even the good plays showed how not getting the ball out soon enough, not throwing to the right guy, not leading the receiver ends up NET costing your team yards (say PT completes a 5-yard pass to WR when TE is open for 11 yards - NET loss of 6 yards). There have been several plays each and every game that even I, an unschooled, die-hard fan of CFB, can see that he threw to the wrong guy or at the wrong time or threw behind a receiver and COST the team yards. For a RS Jr who has started 20 games now, it's inexcusable for him to be making the same mistakes. On him AND on the coaching staff to believe that he'll stop making them. He is what he is and it's not going to get any better.
Barker with some seasoning MAY be better. The WRs certainly seemed to try harder when he was in there. Bad decision on the pick 6 but that's totally inexperience showing. PT is now 9 TDs and 13 Ints this year and only completing 50+% of his throws. And how many of them are bubble screens, slants, hitches, etc. where the throw is very, very short? OK, there's been drops. But, he just isn't accurate. Couple that with very questionable decisions, you just can't start him anymore.