The NFC West has been gaining on the two-time defending NFC West champion San Francisco 49ers.The Seattle Seahawks nearly caught the 49ers in the division race last season before adding Percy Harvin. The St. Louis Rams more than tripled their victory total from 2011 while going 1-0-1 against San Francisco. The Arizona Cardinals couldn't help but get better after acquiring quarterback Carson Palmer.The 49ers, with arguably the NFL's strongest roster and best coaching staff, had nowhere to go but down.