Video games are an expression of art. So it goes with the culture of the place it was made. Amiga is a genuine american. So it is (or tries to be) friendly, explores new technologies, prefers brute force instead of being elegant, optimistic and luxurious. Also overweight with hardware
Amiga software comes from northern europe so it is disciplined, traditional without trying to invent the world. Being disciplined holds back invention some times.
Japanege video games & consoles then are intelligent, polite, shy, want to create intense feelings when they do art. They prefer action instead of words. It goes with the culture.
Atari st on the other hand was made by atari, who's president was northern european so it prefers being traditional and conservative. Simple?