Big, fat deal. Truthfully this kind of thing happens all the time, and has even been done intentionally as a homage/joke. I mean crud, in the DC Wildstorm universe they have had brawls where a bunch of comic characters including guys like Spawn and The Thing were sitting around in a bar and started mixing it up. The Authority once fought a whole bunch of genetically created super beings (an army of them) all of whom were based on popular Marvel characters, and very recognizably so despite some minor (and ocasionally disturbing) changes. You even had The Midnighter (gay super hero) sodomize the equivilent of Captain America to death with a wooden post. Albeit the actual penetration/execution shot was not shown.