Nix, my explanation would be he was buried at sea so some guy doesn’t dig up his remains and trash it. It was also talked about, the choice of country he would be buried in and would that country actually want him there. To add another point, this is straight from one of the articles in the OP.

"After Mr. Bin Laden was killed, senior administration officials said the body would be handled according to Islamic practice and tradition. That practice calls for the body to be buried within 24 hours, the official said. Finding a country willing to accept the remains of the world's most wanted terrorist would have been difficult, the official said. So the U.S. decided to bury him at sea."

As to the other dude, seriously? He never did anything wrong? He financed and helped coordinate the murder of thousands of innocent people but I guess that is nothing.