MIAMI (AP) — Even the oddsmakers aren’t sure about this Super Bowl. That’s how close the Kansas City Chiefs and San Francisco 49ers match up. The Chiefs are a 1-point favorite, which basically means a tossup. Indeed, by kickoff on Sunday, the 49ers could be the bettors’ choice. There could be almost as much action on prop bets — does Kyle Shanahan remember to run the ball if the Niners get…