Some of the documentation is years out of date, and for platforms like iOS, doesn't even exist beyond the outdated KB. If I was the PM for any of the products I'd just take a weekend to make sure what is published is actually correct.
EVERNOTE MAC UPDATE
The documentation is pretty useless, apparently they have been trying to hire someone for sometime to update it. If you are using the App Store version of Evernote then the location has changed to meet sandboxing requirements and your data will be here - ~/Library/Containers/
Here is a quote from Doc #2 so you can judge for yourself:
If I were personally responsible for this documentation, I would be very embarrassed. The Evernote documentation is so sloppy and out of date that Evernote should be very ashamed.