I believe there is a difference in cultures between the asians and westerners. With westerners money can buy most anything. In asian cultures honor and integrity are important, more important than money. It may be difficult for westerners to understand but those that know asian culture know the ethics that they live by. The asians have guarded their fighting arts and dogs for thousands of years. They wouldn't give others (westereners) their such cherished warriors (Tosa) or esoteric fighting techniques (martial arts) to outsiders. They would however, pass these traditions and secrets down from generation to generation within their families and share with few selected other asians. They did however as well, use pit bulls from America to help add gameness to their stock Tosa. I agree with most of Murray's post and also that in the Swinford program the Tosa was most likely not used.