I just tried Wix the other day to make a landing page for and Android app I made and I have to say it's very preferable to WordPress for people who don't know web development.
It's also preferable for people who don't know how to manage a server and/or don't want to keep up with updates and whatnot.
The free templates are also way better!
RE: How to make a responsive portfolio website using wordpress in 10 minutes !