Why? They look friendly in those pictures above.
About 6 years ago I knew this German guy who was trying to get into bodybuilding/personal training, & eventually acting. I guess all of these big german bodybuilders come over to the states with the same ideas. Anyways, he spent some time with Gunter & hung out with him at a few events. He basically said just because he was from Germany didn't mean it open the door of opportunity to hang out with Gunter but it did help a little. Then I asked him about Ruhl & he said that Gunter & Ruhl do not get along & aren't friendly to each other more than they have to be if in public. He didn't know why, but didn't want to ask Gunter. I guess something happened years ago.