Rio was a free concert. That's a difference. Apart from the fact that I do believe that Copacabana - beach is a bit more beautiful than fields in Horsens, outside Zürich, Hockenheim or any fields....I may of course be wrong
If you're a concert-goer you to a concert. Not a video-perfomance. If you sit in the back of any stadium you will at least be able to see the stage. Still it sucks. I agree. Big is not the same as better.
Copenhagen-conspiracy against Horsens: This is more or less claimed by the chairman of the organisers ( : Musikforeningen Eigils ), Erik Munk Jacobsen. According to today's Politiken.