The top 100 is definitely meaningful and a decent representation of how the community rates games. I read it like the IMDB top 250 movies: the latest blockbusters will not be accurate, so you have to take those ratings with a grain.
The one massive flaw that robin implemented, that makes the list far, far worse, is choosing LE ratings for games rather than an average rating between pro, prem & LE. This means that almost all Stern games are solely rated by home owners, when the pros are the most played pinball machines on the planet. Averaging the ratings makes way more sense than the logic that we should rate them only on the supposed "best" version of the game. This goes for JJP's games as well.