Wrong. Maybe the way you dress, things you eat/drink among other things.
I don't think anyone here would be called Joe Sixpack.
Like I said we can go on forever on what Average Joe means to everyone.
Sorry, didn't see anything in the definition that pointed to clothing or dietary choices. As for the sixpack, whether you're referring to fitness or beer, there are plenty of members who fit the bill.
It seems we're using different search engines. Can you post a link to the definition you're using?