Here’s an analogy I’ve been tossing in my head for a while: If we compare the Japanese to a killer whale (bear with me on this). We can ask, “Is a killer whale more like a cow or a great white shark?” A geneticist would say, “A cow, obviously. Just look at their DNA.” But someone who studies animal behavior would say, “The shark, obviously. Look at the environments where they evolved. The sharks and whales hunt for similar prey, often in the same waters. Cows are adapted to live in such different conditions, there’s no comparison.”
Asians from countries along the Equator (e.g. Indonesia and Papua New Guinea) are far more violent than their Japanese cousins. If we look only at DNA, Indonesians are much closer to the Japanese, than say the French. However, look at map. Look at the Longitude of France and Japan. Same distance from the Equator. Look at their respective crime stats. White people in France are much closer in behavior to the Japanese. Surviving winter is what caused us to evolve a conscience and the ability to plan ahead. In that, the European and the East Asian swim in the same waters.