I can say only "Welcome to the Club". I was victim of this issue a while ago, and the solution was stop to post new games and Mockups on Arcade while the rate system persists.
Exposure, like the top games has, is an invitation for more players play the game, and it's ciclical, if you don't BOOM with visitation on the very first hours of your game publication, you're done, because the TOP games always will persist on the top, because they have much, much more visitors.
Also, I don't like someone giving me a rate for my hobby, I do it for fun and pleasure, so, it's (on my side) a counter motivation, where give beneficiation for old games (from the time of the Arcade start).
So, without any worry, I surf on the Arcade to find pearls and very good contents, with downgrade, because people wanting their games to be top of something voted it down.
Look, for example, the tutorials.. When someone don't understand it, and probably didn't read the tutorial about it on the tutorial section, will vote 1 star, it's not making justice for the hard job of the writer.