User blog comment:GutsyTick/Standardization of Champion Pages/@comment-25467559-20150721044224/@comment-3308937-20150721052006

It's not complicated, don't overthink it. It just takes the username of the person viewing the page and substitutes it into the page. You're the only one that will see your name on the page, if you switch accounts it will show the name of the account that you're currently signed into.