Let's remember where we are … in the middle of the pre-season evaluation period. By far the lion's share of the evaluation time and evaluated production has happened on the training field. It's fair to say that the preseason games may be more significant evaluation on a rep-for-rep basis, but let's not ignore a thousand reps over the preseason and exclusively rate Fitzpatrick on the pre-season game 1 sample size of only 5 throws.
Likewise, with the stakes higher and the bullets flying, Rosen showed some ability to take a hit and shake it off while continuing to concentrate on playing QB rather than being scared of the rush. That's worth something because up until now the QB's knew they were untouchable red jerseys. And, we want this game to be in context for him as well. While his performance was mediocre, it represented a strong trending up from what we've seen from him in camp thus far. To me, that's his greatest accomplishment in preseason game 1, proving that he's learning and improving, which is exactly what we want from our young signal caller.
If Coach Flo preaches to his players that the best player will start, then he needs to enforce that policy or he risks undermining the team's belief in him as a coach. If he's not going to follow that policy, he needs to stop saying it.
When evaluating who should start, let's look at the entire body of work, not just 5 snaps of preseason game 1. And, let's keep them in perspective with the lion's share of the evaluation, which is pre-season practices. A young QB that starts trending up and learning how to do things correctly is more important info than a veteran trending up. For Fitz, it's the overall production that matters most. For Rosen it's the trajectory and improvement that matters most. Still, at the end of the day, if the projected production doesn't support changing QB's, Coach Flo runs the risk of undermining the team's belief in him if he doesn't start the "best" QB when the regular season starts.
We have two more ever-increasingly-meaningful preseason games to consider. By preseason game 3, we should know our pecking order. Preseason game 4 is unlikely to change that.