Do we need to go through this again...
Rams shut down our running game.
They did whatever was required to stop the run and were happy to place the ball in Prescott's hands.
Until late in the game by which point the game was done, Prescott wasn't able to keep us in the game with his arm. The late yards and points were against a soft defense devised to just waste time - not really fussed about garbage time yards and points - just interested in taking time off the clock.
Our running defense got overrun but people conveniently forget how we butchered several drives on offense in the first half which was crucial in the loss.
Every game is going to be different.
When required, unless a team has an elite defense and I mean elite (Broncos few years back, Ravens with Ray Lewis and Legion of Boom but less so) a QB will in all likelihood need to win a shootout at some point - you can name countless quarterbacks that have been able to do this over the past 15 years and many aren't even elite. Foles, Ryan, Flacco etc.
The issue that people have with Prescott is that based on the past three seasons, he just isn't going to get it done in that type of game. It's nothing personal, it's just the way it is. And the opposition are fully aware of that. Completely take away our running game then we can only win if our Defense plays like a top 5 defense - which it can but to consistently pull that off is unlikely and they weren't able to play like a top 5 defense against the Rams, Prescott didn't step up when it actually mattered in the first half and we lost.
So for the people who actually understand football, if Prescott is kept on, which looks likely, then it's all about our defense. They need to step up (5th best defense in the league for me last season) again and get into the top three and hope that they execute in every single big game otherwise we can't win.