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Alex Smith vs. Colin Kaepernick. Neither Smith nor Kaepernick have stood out under Jim Harbaugh. The 49ers felt the need to audition three-time Pro Bowler Daunte Culpepper, who last played in 2009. And Wednesday evening, the team reached an agreement with Josh McCown. For the Niners to win, they will lean heavily on their 3-4 defense and running game, anyway. They just need Smith to handle Harbaugh's offense enough to take advantage of some talented skill players — Frank Gore, Vernon Davis, Michael Crabtree and former Jet Braylon Edwards.