Just look at other factors and I think it tells you about Osweiler
Look at how good Watson is playing in that same offense and then you have the Browns who decided to pay him $16m to go away. I mean I know the Browns are historically dumb but if they are paying you $16m to go away when the competition was a rookie who keeps getting benched it speaks volumes.
I think you are probably right. Most likely scenario: he is quite bad, and the fact that he is their best chance to win this weekend is a terrible sign for Denver.
However, I think there is still reason to take a sample of the Brock Lobster special this weekend:
On Houston:
Watson seems like a special player; he is succeeding with terrible O-line play because he is able to scramble while still keeping his eyes down field. No sure how many QBs could step in and succeed like Watson has. O'brien had multiple failed QB experiments before finding Watson. Watson also ran a no huddle route concept based offense in Clemson, that might have primed to play in a EP system. It is not clear that Brock's transition would have been so smooth.
On Cleveland:
I am not sure how much we information we can gather from the Cleveland salary dump trade. For one thing, the Brown's ability to evaluate talent is deeply suspect (lol Browns, etc.). But the reasons are deeper than just that:
1. The entire Brock trade was about eating his salary for draft picks. Immediately after the trade their were reports they were trying to flip Brock for another pick and eat part of his salary. I am not convinced they deeply evaluated him in the first place. Was Brock given enough time to learn their offense? Was he dismissed sole because of mechanical issues? Who knows.
2. The Browns claim to be fully committed into a long term rebuild. Cutting Brock saved them Cap room for the next two years. Only the first year was guaranteed. Keeping an only average QB for a one year deal, or for multiple years on a big contract does nothing for their rebuild. Cutting Brock was logical in this scenario, even if they thought he was the best QB right then. All of the Browns moves point toward giving their rookie playing time to develop.
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Now again, I agree with you based on what we know now. Brock is probably just bad. Occam's razor. But we are about to get a few more Brock data points. If he does decently well, then we should consider these other reasons that Brock failed. To me, Brock's Houston fiasco might speak to the transition from non-EP to EP style offensives.