It was one of the biggest sports betting events of the year. However, Super Bowl betting this year fell dramatically in Las Vegas, with wagers totaling nearly $152 million. That was a noticeable decline from last year when players staked over $185 million on the big game. Somehow, sports books in Sin City were still able to rake in more than a $22 million win, according to the Nevada Gaming Control Board. One reason for the sharp decline was due to a lack of large bets. There were five bets of $1 million on the game last year in Vegas….