yes, these morons don't quite seem to get that mortality (deaths) or how long you live, is not a factor in judging whether a culture is superior, there is no factor for judging the superiority of a culture. this is because there are no superior cultures, only simple and more complex ones...and simplicity and complexity is no factor in judging whether a culture is superior either.
the only thing that lifespan and mortality indicates about a culture is how long the people belonging to a particular culture lived, and "different strokes for different folks" says that people of a particular culture don't need to live long, to be a part of their culture.
so the only possible answer for this question is that they are in equal grounds, meaning they are all unique cultures, and since they are all unique they are all equally unique to their own.
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this question was worded horribly, it should say is the "western world", not western civilisation, because human civilisation isn't merely the western world.