1rst off "Robots in Japanese culture" are not any different from western culture (R2D2, Captain Data, Transformers(please shut up with the transformers-are-Japanese crap) etc.) so to speak.
2nd and most important what kind of retarded moron would say Japanese robots are superior or even comparable to other designs such as the Phoenix Mars Lander or the Globalhawk and in fact i would like to point out that the japanese NEEDED foreign robots to scan for radioactivity in the Fukushima plants.