Popular category in Movies

What on earth is the “Popular” section in movies search supposed to be based on? It is described as “The most popular movies of all time”… based on what? Surely it makes sense to have this section ordered by % score from Trakt users. Or how about having a “most played” section and a “highest scored” section in addition to whatever “popular” is supposed to be.

Trending is based on the number of users currently watching. Popular is clearly mostly based off of number of plays, what isn’t clear is what else influences it since it only generally descends number of plays as the pages go on. My best guess is there is also some time element to it.