If there is one thing that I have learned over the years it is to never predict what will happen in an NFL season after four weeks. So much can happen between now and January when the playoffs start.
The Seahawks have put themselves in good position to win the West with their 4-0 start and victory over the 49ers. Seattle does not generate much offense, but their defense is solid and as long as Russell Wilson is at quarterback they always have a chance to win no matter how much time is on the clock. The 49ers and Cardinals sit at 2-2 which puts them in the playoff mix. The Rams may not look good now, but Jeff Fisher is a good coach. If there is a way to turn things around he will figure it out.
Really, the West is no more of a mess than half of the divisions in the NFL. The NFC East is so bad that the local radio station here in Washington is touting the Redskins as being in second place, but won't say that they are 1-3. The AFC North has three teams tied at 2-2 and the 0-4 Pittsburgh Steelers. The NFC South is the undefeated New Orleans Saints and three teams at 1-3.
The NFL tries every year to make it so that every team still has a chance to make the playoffs when November rolls around. Thus, we get early season divisional races like the current ones in the NFC West, NFC East, NFC South and AFC North.