Most of the experts felt Williams was head and shoulders above the other QBs in this draft. On the other hand, I heard a lot of skepticism about Williams from fans. I think it's too early to make pronouncements on rookie QBs - primarily because their 1st year performance is so dependent on the situation they landed in. Look at poor Trevor Lawrence. Coming out of the draft, he was talked about as a 'can't miss' Andrew Luck/Peyton Manning level of talent.
Not look quite so rosey now.
I think where he landed and what that franchise has done (or not done) to support his growth is pretty central to his failure so far in the NFL.