Did he run more than RG3 and Wilson? Nope. Yet, he was slammed and sacked more than those two. Decent job? Get your eyes fixed. That core had a subpar performance for most of the year. Not only could they not protect Cam by acceptable standards, they struggled to open running lanes for our RBs too. Is that a coincidence? Again, NO.
Does Cam hold onto the ball too long sometimes? Yes, but only because our receiving options couldn't get open nearly enough. That said, there's no excuse for O-Line to have breakdowns like we had last year. Granted, injuries set this core back but we weren't having a stellar year before injuries set us back.
Why was he sacked more than RG3 and Wilson? Might be they play in a West Coast Offense which relies on quick passes and getting the ball out before the defense can get there. He holds the ball because he is looking for the big play not because of the receivers. Do you really think the difference between him dumping the ball more in the second half of the year was receivers suddenly getting open or was it because Cam started taking what was being offered by the defense and being smarter and more mature as the year went on.