1980 Black Belt Issue Vol 18 No 4. Article by David Orange, Jr.
Isn't a direct quote from Mochizuki. Paragraph reads:
Mochizuki does not wish to put himself on Uyeshiba's level, but he wonders why Uyeshiba employed only about 15 of the 350 techniques of daitoryu aikijujitsu in his aikido. "Between two well trained opponents," Mochizuki said, "a punch or kick or throw will have little effecct. the strongest one on the ground will win." Therefore, he places emphasis on judo.