Great article by Barnwell. I think you have to factor in his rookie year while understanding the context (bad situation), so I disagree that you should throw it out. Rosen was always a QB that needed a good situation (much like Goff and Haskins). It was no surprise to see him struggle in Arizona, but I did view him as a 1st Round QB, because he has the tools to succeed in an advantageous situation. There are only so many QB's who can do that (certainly less than 32).
You can see in the chart above that Rosen is most accurate (relative to other QB's) in the 11-20 yard range and that he was more accurate (according to the chart) in the 16-20 yard range than any QB over the last two drafts, and that should suit a NE-style Offense.
The idea that he would have been QB1 in this class is pure nonsense, but he would have been right there with Haskins fighting for QB2. At the price Miami paid, that's too good to pass up. I hope Miami is able to develop the OL, though, because he really does need a good situation to be a quality player. That's where the deal and the Wilkins pick break down for me.