Couple things here...
First, well before this game we knew the Chiefs were a real defense that had played very well vs Seattle. They were 3rd overall in scoring defense last year, and very high in sacks; they know how to bring the heat.
Second, keep in mind he's had very few live snaps coming into this game against a playoff-level defense. That is exacerbated by Fish pulling him early from the Dallas game due to a non-throwing shoulder stinger (which I observed at the time I didn't like due to him needing snaps), and the fact that our defense can't get off the F ing field. It's ridiculous. Now look which defenses the Rams face next: the Broncos and Vikings.
So at this point given how he looked tonight I gotta concede he's probably not going to get there facing those two defenses. Will have to wait and see of course but it don't look good.