Although Timothy Bradley deemed himself the "top pound for pound in the world," Manny Pacquiao's trainer believes the Filipino boxer will be a big challenge.

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"A guy like Manny, with speed, is more dangerous than the power guys," Freddie Roach told the Los Angeles Times. "When he gets me up here [points to the middle of his chest], it hurts, even with the vest."

Bradley and Pacquaio will step in the ring for the second time on April 12 at the MGM Grand in Las Vegas. The two boxers first fought on June 9, 2012 and Bradley won by a split-decision creating one of the most controversial matches in history. Yet, Pacquaio isn't angry over the decision which led to his loss.

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"I have peace of mind," he told the publication. "Not every time is a decision perfect. I don't blame the officials. I'm not mad at the [Nevada State Athletic] Commission. It is part of the game."

Yet, some boxing experts aren't as confident as Roach that Pacquiao will win the fight. For example, in an interview with the boxing website, RingTV.com, Larry Merchant said that Pacquiao seems "eager" for the match, but he doesn't believe he can beat Bradley.

"The question for Manny is whether he will have the ability and the fire to force a fight, and to return a little bit to his previous incarnations," Merchant said.

Merchant, a former sportswriter and longtime commentator for HBO Sports added, "Bradley wins every place that he goes. If there is any resistance, he wears you out. He's a damn good fighter."

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