Still don't buy it.
This isn't the Brissett game-plan against Houston they're giving Zappe. He's getting into/out of plays at the LOS, identifying free rushers, throwing the ball downfield (although he has yet to connect on a true deep shot). A pass of his against Detroit travelled 50 yards in the air before dropping (it fell incomplete, but it was a pretty deep pass).
Baltimore is used as the example of the offense's potential under Jones. In that game Jones threw eight passes of 20+ yards.
He went 22/32 (68.8%), 321 yards, 0 TD, 3 INT, 62.1 passer rating.
Zappe, against Cleveland, threw six passes of 20+ yards.
He went 24/34 (70.6%), 309 yards, 2 TD, 0 INT, 118.4 passer rating.
First of all, you don't do what Zappe did with a limited game-plan and training wheels on. Secondly, if Zappe (in his second career start, as a rookie) is producing on-par with the best of what we've seen from Jones, why should we believe Jones offers more upside/potential at this point? Maybe on paper, but Zappe is simply performing better right now, with less NFL experience to boot ... so does Zappe actually have less potential/upside than Jones? I'm not so sure.
And even putting aside what I think is a weak argument re: game-plan to explain Zappe's success, the fact of the matter is that his pocket presence, field vision, and poise cannot be game-planned or handheld.
It really boggles my mind to hear take-after-take-after-take undermining Zappe's performance to this point. It seems to me that a lot of people aren't able to pickup on the nuances of playing the QB position and identify the subtle (but critically important) traits that make for really good QBs. It's only 2-3 games, but Zappe has demonstrated some legitimately high quality QB play.