Your link did not come though, but that tutorial is incorrect. Using Migration Assistant to automatically move everything back is not a true clean install. For example, if you have junk accumulated in ~/Library/Application Support, Migration Assistant puts it right back there.
The only way to do a true clean install is a fresh OS install and a manual move of all settings, apps, and data back.
You could use a Time Machine backup as the source to manually copy files back from though. But it is still a manual process.
Are you having some problem that makes you want to do this?
This is the link http://mashable.com/2013/10/23/clean-install-os-x-mavericks/
I don't seem to be having any issue. I guess I was more curious then anything. I know my way around my Mac pretty well. I'm 31 now and I've used Macs daily since I was a kid.