If you find one, let me know, because to the best of my knowledge what you're looking for doesn't exist. It certainly doesn't exist on the Europeanist side, although it's possible that someone on the Japanese side of the disciplinary aisle has written something that I don't know about.

The closest anyone has come is Marc Bloch's short comparative chapter at the end of his magisterial Feudal Society. However, that's from the 1930s, and while Bloch was and remains incredibly influential, we've come very far in our understanding of medieval society in the past 80 years. The reason noone has attempted it since is pretty simple: a) people have enough trouble defining and agreeing on 'feudalism'/knights/honour-service culture in just one continent, do trying to do two is especially daunting and b) the sheer amount of work needed to produce a proper study is beyond the capability of one modern specialized scholar - even just in language skills, you're looking at a minimum of modern English, French, German, Japanese (and possibly Italian and Spanish), plus medieval Latin, Old French, medieval Japanese and classical Chinese.

I do believe that such a study would be fascinating and fruitful, however, and the good news is that it's more likely to happen now than at any point since Bloch. Collaborative and interdisciplinary projects involving large(r) groups of researchers are increasingly popular in the humanities, especially in Europe, where it's the only way to access many lucrative ERC grants which are designed with lab sciences in mind. It's something I'd love to do one day (once I finish this PhD and get a job and find a Japanese historian collaborator...), but to date nobody's done it!