@BigDaddyVladdy different outlets/sportsbooks have reported their percentages throughout the last 2 weeks on twitter all over the place. Mostly, I pay attention to Pinnacle and CRIS as they are the most reputable books out there.
Summary: Hiller projects as a career backup because he simply lacks the arm strength to drive the ball down the field. Some team will take a chance on him and try to develop him into a starter, but defenses can simply shut him down by challenging his ability to drive the ball down the field. Hiller has a lot of tools a quarterbacks coach can work with, and he might end up being a valuable project, a la Matt Cassell. Hiller's decision-making will probably get worse in the NFL as he will face much tougher defenses with his limited arm.
Player Comparison: Sage Rosenfels. Hiller and Rosenfels lack the arm strength and project as backups.