Not sure how anyone would expect him to surpass Cooper Rush, a guy who has been on the team, knows the offense for which he's a better fit, and had won games for Dallas (9-5 record).
Why? When his skillset doesn't fit the offense? They found Purdy, signed Darnold, and were trying to win a Super Bowl. And a little read option is not a total commitment to a scheme.
Anyway,
My original statement:
IMO, Trey Lance has still not played in a offense geared for him.
I've not suggested him as a fit for Rams. Everyone is telling me what he can't do, but no one has or can refute the original statement.
Neither Dallas or the 49ers put him in a Greg Roman type system of which I believe he could have success. Strong emphasis on a running game using a read option or simply QB runs. One read passing game then run. That's all Lamar Jackson did initially under Greg Roman (not Todd Monken). And they showed commitment to the system as they made sure their backups also fit it.
Yes. He entered the league with very little experience in the passing game. And to try to immediately make him into a pocket passer or expect him to immediately have success in such is foolish. It may never happen.