> How can my argument be US centric when I'm European and have never even visited the US?
You don't have to be from the US for your post to sound US centric. It sounds exactly like every other "USA is da best! The east is inferior in every way. We have zero problems." argument which is found everywhere online, especially on sites with a large proportion of US users (like HN).
The comment I replied to had no sources as well and yet it isn't downvoted.
> It sounds exactly like every other "USA is da best! The east is inferior in every way. We have zero problems."
Actually my comment says the exact opposite, it says that at least the western part of the EU is less corrupt than the US. Do you realize that I said the west [of EU], not the west as in the US? You're the one who is thinking US-centric after all, thinking that when someone says "the west" they mean the US even though it's in a sentence that talks about parts of EU, this possibility didn't even occur to me - that's how foreign it is to me.
That kind of hand-wavy stuff doesn't fly here. If you're going to make a claim like "EU Countries are more corrupt than the US", YOU have to provide a credible source for that claim.
Telling people to go and verify for themselves a claim that you made is just lazy and disingenuous.