He has more trouble the more he holds the ball and that does go back to the Eagles.
However, he is also very effective when he gets rid of the ball quickly. That too goes back to the Eagles.
For example, according to PFF, in 2014, when he got rid of the ball quickly (under 2.5 seconds) he had a qb rating of 103.5 (ranked 11th) and a completion percentage of 73.4% (ranked 6th, tied with Romo). But when he held the ball (2.6 seconds or over), his qb ranking fell to 59.4 (37th), and his completion percentage fell to 46.4% (38th).
In 2014, he held the ball too long (again 2.6 seconds or over) on just over 50% of his attempts.
So to me it’s not that he just invariably holds the ball. It’s that he’s better when he doesn’t and much worse when he does.
In 2015?
He has a qb rating of 86.8 when he throws quickly (ranked 25th) and a completion percentage of 69.1% (ranked 20th), but also has aqb rating of 68.1 when he holds the ball (ranked 30th) and a completion percentage of 43.9% (ranked 34th). In 2015, he holds the ball on just under 44% of his attempts.
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