Big Ben may actually have a good, or at least solid and consistent, year. Case in point: Brady of a couple of years ago. A QB on a tough, defensively solid team, even if he's not going to light it up, won't have to deal with tons of pressure. The running game is pretty good, so when Ben goes to the air, he'll have some time and space. Few interceptions. Moderate yardage and TDs.
I'd vote for him as the most consistent. I think that's what you want from a #2 fantasy QB.