There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
Yes, ar. 200-300 pounds advantage is not that crusual, taking into account that according wiki the maximum weight of giganto was 1300 pounds (600 kg).
Most probably gigantopithecuses were predominantly living on the ground since its hard to imagine an ape of half ton to climb on the trees. So living on ground level and surrounded by big predators these apes obviously were filling quite confident for their safety at least in the presence of the alpha male. Otherwise prehistoric Sunda tigers would wiped out all the specie.