There's no definition of Europe at all in play here. It's the EU. A specific subset of countries, which is not the same as Europe. So what I wrote only goes one way. I'm not quite sure it's an argument, really. I presented the facts, and said that something with a maximum difference of 35% is very comparable. The first result I got through Google was the numbers I have given, which are also the official numbers from the European Union itself. That should be a lot more correct than other numbers you could find.

If you want to google it, make sure you use "EU population", not "Europe population". Or you can look at that link I gave, which gives data not just for the EU, but a lot of other European countries as well.