LOS ANGELES (Reuters) - Pop and rock music legends bested their younger chart-topping competition on the concert trail in 2012, according to data released on Friday by trade publication Pollstar. Pop matriarch Madonna, 54, led all competition, grossing some $296.1 million in ticket sales in her 88-show world tour. She topped Bruce Springsteen and the E Street Band ($210.2 million) and Pink Floyd founder Roger Waters ($186.4 million). ...