Of course you realize that Brohm threw for 146 yards, no touchdowns, two interceptions and a grand total of three points in his only start. Other than that he was great.
Objectively speaking, the guy has done nothing in the NFL to give anyone a clue that he will be good. He threw no long passes, the longest was 15 yards including yards after catch. Just because Mel Kiper thought he might go first overall a year before he came out, people think this guy is going to be great. His production has been far less than Ryan or Trent. It's year three coming up and so far he's made the Packers practice Squad and the Bills 3rd string.