Is it true that wordpress blogs load a little bit faster in Nginx than any equivalent Apache web server?
Not so much. Maybe a couple of nano seconds fast but that's it.
The fact is that you can't even tell the difference with naked eyes.
Don't bother much about web server. I used to culture them when I was in technical.
At the end of the day a simple marketer shouldn't be burdened with these high end technical terms.