What similarities can be drawn between japan's shogun system and the feudalism of medieval europe?

Shoguns were similar to Lords in feudalism Europe. Lords in Europe were given their power by the King and Shoguns were given their power by the Emperor. And just like lords they were the real power in their region who worked closely with other classes in Japanese society. Shoguns worked with civil servants, who would administer programs such as taxes and trade. 

Assemblies do not have written codes of laws. laws are matters for magistrates and courts, not assemblies. codes of law are things such as civil law, criminal law, and constitutional law. what assemblies have are procedures regarding debating, voting and other business they might carry out.  also note that rome had three assemblies: the assembly of the soldiers, the assembly of the tribes, and the plebeian councils.