Yeah he really is built, his arms are enormous. A lot of his opponents seemed to be merely big, lacking the same muscle mass. Also, I really like sumo. Is it broadcast anywhere in the states?
It seems like he had the Muhammad Ali approach: When most of your opponents dwarf you in size, use technique and quickness, take a shot or two, and let their mistakes and lack of grace foil them.
you can check w/ your cable company and see if they carry "TV Japan" which is the NHK feed here in the states, but it ain't cheap at something like a month (tournaments are 15 days 6 times a year - jan, march, may, july, sept, nov.)
dish network has it too, and people on the sumotalk.com forums usually post them in a day or two