Why the old forum still pops up better than the current Boards on browsers?

In case the title wasn't clear enough, what I meant was the priority you search something LoL forum related, big chances are that they're gonna be something from 1-2 years ago from the old forum. For example, if I typed "Is Janna viable in season 5" on Google, the results will show the posts from 1-2-3 years ago with a title similar like "Janna, viable or not" but it's definitely not the season 5 I'm looking for. I want some current, updated discussion about live gameplays, but it's hard enough that Boards is still a confusing, not-too-organized new forum, and now is hidden from the browser.

I may suggest a solution which would be either promote this "Boards" to be more popular priorities from browsing searches, or just pull the other one down (not shutting it completely, just pull it down).