On Sunday, the Seattle Seahawks put on a show, wiping out the Denver Broncos 43-8 in Super Bowl XLVIII and looking unbeatable in the process.With an average roster age of just over 26, a young, playmaking quarterback, a dynamic defense, a proven head coach and solid organization, the Seahawks looked to most of the nation like an unbeatable dynasty in the making.Yet the 49ers know better.The Niners not only beat the Seahawks 19-17 this season, the team from San Francisco went into CenturyLink Field for the NFC Championship Game and came within one play of beating Seattle in what turned out to be the real Super Bowl, a tight, 23-17 'Hawks victory. Super Bowl XLVIII PhotosIn fact, going into the 2014 season, nothing is guaranteed for either the Seahawks or 49ers in the NFC West, which has become one of the toughest – if not thee toughest – divisions in the NFL. Both the Rams and Cardinals in the coming season will be major hurdles for both Seattle and San Francisco.Just as the 49ers went to the Super Bowl at the end of the 2013 season – then were toppled by the Seahawks – the Seahawks can be toppled in 2014 by a 49ers team that is built along the same lines as...