You're technically right, but the comparison isn't completely far fetched considering:

* Chinese surnames are monosyllabic, and given names are disyllabic. It'd be more awkward to say "average Joe or Xiùyīng".

* Both Chinese given names and surnames are usually "real words". Just like how "Joe" is a descendant of the Hebrew "Yohanan" meaning "Graced by God", or even the many English given names that are real words: Carol, Eve, Jade, etc. It's just more common in Chinese names.

* Given names are rarely used by themselves (much less than in Latin languages).