By Rich Jones & Rich Jones Brandon Allen is at the Super Bowl for the third time. He’s used to the excitement and knows what to expect – even if he’s not supposed to play. After being with the Los Angeles Rams and the Cincinnati Bengals, he’s faced defeat twice. This year, with the San Francisco 49ers, he’s hoping for a win. “It’s been good,” Allen said. “This is my third Super Bowl, so I kind of know how the week usually goes, and I think as a team we’ve done a pretty good of handling all the media, all the other stuff you have to do for this week and still going out and having good practices…