Precious few fighters are able to spark a love affair with Germany‘s mainstream. Brothers Wladimir and Vitali Klitschko, heavyweight world boxing champions, are virtual royalty in Deutschland (easily able to draw 60,000 fans to a stadium for a prizefight). The slick and elusive Sven Ottke (34-0) and knockout artist Dariusz Michalczewski (48-2), also boasting world championship resumes, were also fan favorites before their retirements. Dennis Siver? Well, he‘s still climbing the ladder of not…