“Comparing Feudalisms,”

Peter Stearns, World Civilizations: The Global Experience, pp. 456-7.

…Both [Japan and Europe] used feudal relationships in situations where they could not sustain more centralized forms of political organization. The West had the example of Rome’s empire, but the medieval leaders simply could not reconstruct the elements that had allowed the empire to exist and flourish. They could not organize or afford the necessary armies, and they could not agree on standardized laws. Most critically, they lacked the means to support an independent bureaucracy that could cut across regional societies and language groups, except through the important but somewhat specialized mechanism of the church. The Japanese had the example of the Chinese imperial system available to them, and the briefly attempted a comparable kind of bureaucratic development, using Confucianism to promote the proper political attitudes, But, as in western Europe, a system of centralized administration could not be established in Japan.
 
…In both western Europe and Japan, feudalism was highly militaristic, Both the medieval West and Japan went through long centuries of unusually frequent and bitter internal warfare, based in large part on feudal loyalties and rivalries. Although this warfare was more confined to the warrior-landlord class in Europe than in Japan, in both instances feudalism summed up a host of elite military virtues that long impeded the development of more stable centralized government, These values included physical courage, personal or family alliances, loyalty, ritualized combat, and often contempt for non-warrior groups such as peasants and merchants.
 
The military aura of feudalism survived the feudal era in both cases. It left Japan with serious problems in controlling its samurai class after the worst periods of internal conflict has passed in the early 17th century. In the West, the warrior ethic of feudalism persisted in the prominent belief that a central purpose of the state was to make war, thereby providing opportunities for military leaders to demonstrate prowess. But the legacy of feudalism was not simply military. For example, the idea of personal ties between leaders or among elite groups as a foundation for political activity continued to affect political life and institutions in both the West and Japan long after the feudal period ended.
 
Furthermore, the characteristics of feudalism in Japan and in the West were not identical. Western feudalism emphasized contractual ideas more strongly than did Japanese. Although mutual ties were acknowledged by members of the European warrior elite, feudal loyalties were sealed by negotiated contracts in which the parties involved obtained explicit assurances of the advantages each would receive from the alliance. Japanese feudalism relied more heavily on group and individual loyalties, which were not confirmed by contractual agreements. Probably for this reason, the clearest ongoing legacy of feudalism in the West proved to be parliamentary institutions where individual aristocrats (as well as townsmen and clergy) could join to defend their explicitly defined legal interests against the central monarch. In Japan the legacy of feudalism involved a less institutionalized group consciousness. This approach encouraged individuals to function as part of collective decision making teams that ultimately could be linked to the state. Although in both cases feudalism helped shape distinctive political styles and values that would be combined with later centralizing tendencies, the styles and values themselves were not the same.
 
[Stearns goes on to speculate about industrialization and economic dynamism in the 19th and 20th century, a far more tenuous thread – although given Japan’s early industrialization, one might speculate on the parallels between European and Japanese imperialism in the late 19th and early 20th centuries.]