RIO DE JANEIRO – Junior dos Santos was surprised to find out his upcoming opponent, UFC heavyweight champion Cain Velasquez , would not be accompanying him for a promotional trip to Brazil. But the jovial former champ insists he’s not upset. After all, he thinks the mental edge is all his. “For me, I don’t care about the other guys, other people,” dos Santos told MMAjunkie.com (www.mmajunkie.com). “They do whatever they want to do. I’m doing my part, and I think it’s very important, especially here in Brazil.” As MMAjunkie.com previously reported, Velasquez was announced as a participant in a Rio de Janeiro stop on the promotion’s multi-city UFC World Tour 2013