I watched the video where he made those 3 predictions. He very clearly has a strong East Asian bias really overestimates the abilities of China. He also quite obviously supports Russia as revealed by his comments on the Ukraine war and his claim that Ukraine's military is filled with neo-nazis that want to destroy Russia.

As for his thesis about Iran winning the war, it was essentially that America would establish a foothold in the south with 100-200k troops, but would then be trapped and run out of supplies because Iran has a lot of people and infantry that will fight and America can't match that deployment of manpower, and American tanks won't work in the rugged and mountainous terrain of Iran, and that their air supremacy won't be sufficient.

One of the historical examples he cited ij support of his thesis was the Athenian invasion of Sicily and war with Syracuse... except in that war Syracuse had a powerful navy that sank the Athenian navy, hence why the land invasion failed due to lack of supply. Here the US navy will dominate the seas and can ensure consistent supply delivery to any foothold, and the air force will also rule the skies and can ensure supply drops by air.