Glad to see this thread back up. It is difficult to come up with what exactly is a heavy bow, but as Terry has said, 60# seems a pretty good weight. If you don't agree with that, try to sell one over 60#. That being said, in the orignal post the weight referred to was below that, but for that individual it was a heavy weight. I guess the main point of this thread is about shooting what is a heavy weight for an individual and the advantages that it would have. Many people have already described some of those reasons. I haven't been doing the trad thing as long as some folks, but have killed stuff using trad bows ranging from a little over 45 pounds to a little over 80 pounds, and both weights have some advantages over the others, IMHO. When I started out, 55# would have seemed heavy to me, but now it seems fairly light. I agree with others that having a heavier weight makes for a slightly improved release, but eventually you get to a weight that is heavy enough that you don't relax your fingers and have more trouble holding steady on target for more distant targets, so those advantages can go away. This happens at a different point for everyone. Obviously, the heavier weight for a given bow design will have penetration advantages, but at some point there will be accuracy issues. If you aren't shooting over 25 yards, that will be less important than for a target archer shooting longer distances. We each have to find where we are comfortable. For me, my HH Rogue that is 95# @ 29" is a nice bow to practice with for strength and as a training bow, but for now I would not be accurate enough with it beyond 15 yards, so it isn't going hunting with me. Maybe that will change in the future. As so many have said, shoot the heaviest weight that you are comfortable/accurate with in a hunting situation. Also realize that you may be tired from hiking up a mountain or stiff from sitting in a cold treestand, where a slightly lighter draw weight may be helpful. One thing is fairly certain, though. Shooting heavier bows makes it easier to handle the lighter weight bows. I usually shoot whichever bow that I am shooting regularly the best. YMMV.
One thing that I will mention, which my be a curiosity all to myself. I find that when I have a lighter weight bow I have more of a tendency to short draw and develop target panic. With the heavier weights that I really have to work at, I seem to focus more on getting to full draw and the problem goes away. That may be just me and some mental issues, but I have definitely noticed it to be true.