Complex sentence: Kahn is a living example of a successful Asian American immigrant whose assimilated well, his flaw despite his superior earning power and more possessions, Hank and the guys are far happier with less than Kahn who is striving to get more.
Split into simpler sentences: Kahn is a living example of a successful Asian American immigrant who's assimilated well. Despite his superior earning power and more possessions, Hank and the guys seem far happier with less, than Kahn who is striving to get more.