I see your point, but I think you're discounting the Monk's point that a lot has transpired since the draft what with Roster changes due to evals, Minicamps, Training Camp, and the sample size in the preseason game as WR and QB. They (non Pats teams) can evaluate changes in his route running, blocking, reads, mechanics (or whatever fancy stuff football people talk about that I wouldn't begin to have a clue about). Heck, he's even trying returns now.
The fact of the matter is, I laugh when (hypothetical) people diss preseason game performances but get wowed by college tape where the talent can be soooooo much worse than the people who actually make it just this far (on the 90 playing in a preseason game).
This is the guy (Jake Hansen) whom Malik absolutely embarrassed - same one who stripped Derrick Henry for a fumble in the 4thQ of a real game last year which was a pivotal moment that led to one of the Texans' 2 wins.
Houston Texans linebacker Jake Hansen strips football from Tennessee Titans running back Derrick Henry's grasp for Texans fumble recovery.
www.nfl.com