Maybe it's not useful? Or not as presented here? I mean, Malaysia and Japan have both been ruled by basically the same party for all but maybe a few years since the end of foreign occupation. One is ruled a democracy here, thee other isn't. I don't see a good reason why, other than Japan is friendlier with Western values than Malaysia. It's also useless when you look more than about 50 years in the past. In 1835 you were really democratic if every white man could vote, now even somewhere like Iran has suffrage for women and minorities.