Yeah, I see a lot of the same strengths in Williams as Fields (mobility, plays out of structure, big play waiting to happen) and honestly, some of the same weaknesses (holding onto the ball too long, not knowing when a play is dead). But the difference in the release quickness, I think a touch better ball velocity, and general feel in the pocket can make for drastically different results. Like with Williams' release, that may be a TD instead of INT in the endzone yesterday. That may be a Mooney catch on the sidelines instead of a tipped ball. Hopefully those difference would be just enough to take 15-27, 170 yard, 1 TD, 1 INT passing games to 19-27 for 230 yards, and 2 TDs.
As for the coaching, he basically said they need better work on the details. Yesterday, was more of the same IMO. Still some odd stuff like the wildcat on 4th and 1, Justin Jones in coverage on a TD for like the 3rd week in a row, and failure to keep their foot on the gas against a clearly inferior team.