People have been killed on the West Coat during the LA/SF rivalry. The reason it doesn't get as much press as BOS/NY is that whenever one team is good, the other plays horribly. And it's been 45 years since they played in the postseason (I consider the 3-game playoff in 1962 part of the postseason). But they've had their fair share of knocking each other out of the postseason a bunch of times (2004, 1997, 1993, 1982, 1962, 1951, etc.), and it's a lot more even.