Why Extended Edition is recommended for single player and noobs?

I have read this here and it's funny because chinese AI has very serious problems. First of all it doesn't produce enough favour and myth units. I played two games with 6 chinese AI, sometimes they build 1-2 Terracotta Soldiers and nothing else. 5 Terracotta Soldier was the maximum, when I watched the postgame statistics, but most of them had less than 3 myth units. Difficulty was hard. They didn't produce any favour until Mythic age. Additionally chinese don't produce Generals and Monks. The second problem: chinese don't gather any relics. Despite of these Chinese usually perform well in the late game thanks to their cavalry with ridicoulosly low pop cost. The TOTD campaign is also very weak.