Perhaps if Jay had Orlando Pace in his prime at LT giving him the extra time to throw to the outstanding Rams WR's he could have run the Martz offense. But he had neither things.
Either was Warner once he was getting the shit kicked out of him. Took him 3 years to get his MOJO back from the shell shock. Bulger played well for a bit and than suffered the same fate. That O kills QBs and these guys had a great Oline.
Both Warner and Bulger had 3 years before going to total shit for 3 more. This with associated players groomed for it. The pressure and beating gets to them.
"2002–03 seasons
Warner began the 2002 season as the Rams' starter, but he played poorly, throwing seven interceptions against only one touchdown as the team went 0–3. In the Rams' fourth game, this one against the Dallas Cowboys, Warner broke a finger on his throwing hand. Warner attempted to come back later in the season, but his injury allowed him to play only two more games (both losses). In contrast to his 103.4 career passer rating entering the season, Warner posted a minuscule 67.4 rating in 2002. The following season, Warner was replaced as the Rams' starting quarterback for good after fumbling six times in the team's opening-day game against the New York Giants. Warner later revealed that he had previously broken his hand and that it had not fully healed, making it more difficult to grip the football."