By Keith Idec

LAS VEGAS – Badou Jack was his usual quiet, respectful self Thursday.

The homework he has done on Marcus Browne indicates to Jack that Browne typically is much more like him than Browne has behaved throughout the promotion of their fight. Browne has assured Jack that none of the noteworthy names on Jack’s record have prepared the former WBC super middleweight and WBA world light heavyweight champion for what he’ll encounter Saturday night at MGM Grand Garden Arena.

Browne called Nathan Cleverly, one of Jack’s conquests, “a bum” during the press conference for the Manny Pacquiao-Adrien Broner undercard Thursday. That’s out of character for the unbeaten Browne, according to Jack.

“The people from New York that I know have been telling me that’s just an act,” Jack told krikya360.com. “He’s not really like that. You guys, the media, probably know him better. He’s not a guy that talks a lot, so that’s just an act. He’s probably nervous. I don’t care if he’s nervous or not. I’m gonna win this fight, regardless.”

Since suffering his lone loss – a stunning, first-round knockout against Derek Edwards in February 2014 – Jack has constructed one of the most impressive resumes in boxing.

Las Vegas’ Jack (22-1-3, 13 KOs) has beaten Anthony Dirrell by majority decision, George Groves by split decision and Cleverly by fifth-round technical knockout. The Stockholm, Sweden, native also has settled for three debatable draws with Lucian Bute, James DeGale and Adonis Stevenson.

The result of the Bute bout was changed to a disqualification victory for Jack because Bute tested positive for Ostarine, a banned substance, in a performance-enhancing drug test.

Bute, Cleverly, DeGale, Dirrell, Groves and Stevenson all have held at least portions of world titles from one of the recognized sanctioning organizations.

Jack therefore is convinced he is much more prepared, mentally and physically, for this high-profile fight. Staten Island’s Browne is unbeaten (22-0, 16 KOs) and talented, but the 28-year-old southpaw hasn’t faced the level of competition Jack has encountered.

“From what I heard, a lot of people have been telling me he’s weak mentally,” Jack said. “But I’m not really focusing on that. I can see through people. People that talk like that, usually they’re very insecure. They try to build their confidence by talking. Me, I’m quiet. I do my talking in the ring. The ones that are loud, they’re never dangerous.”

The Jack-Browne bout will be one of four fights Showtime will air as part of a pay-per-view telecast scheduled to start at 9 p.m. ET/6 p.m. PT ($74.99 in HD).

Keith Idec is a senior writer/columnist for krikya360.com. He can be reached on Twitter @Idecboxing.