This was during the great "squatoff" against Fred Hatfield in 1984 or 1986. Fred Hatfield, aka Dr. Squat is a powerlifter, the first human to ever squat more than 1000 pounds (see link below).
They organized a contest to see the results in two different kinds of approach,to weightlifting bodybuilding (high volume, moderate weight) Vs Powerlifting (low volume, heavy weight). First, they tried for maximum poundage. Platz got beaten soundly (600 some pounds for Platz vs 800 for Hatfield).
Then they tried for a maximum of repetition with a set weight (450 pounds). Hatfield got 6 and Platz got, well 23 as you can see in the video.
I think people equaling heavy weights with big muscle are just plain stupid and have no idea whatsoever about muscle biology. Volume and holistic training, in order to stimulate all 3 muscle fibers type is the only way to go. But then again, getbig is far from a scientific heavens. Adonis and his lackbrain principles are proof enough of that fact.
Here, dr.Squat lifting 1014 pounds sans belt or suit(click on the link middle of page):
http://www.bodybuilding.com/fun/drsquat.htmI have no idea how to post a picture but here is a great shot of Dr.Squat and Platz during the face-off
http://www.bodybuilding.com/fun/drsquatbigp2.jpg