Quoted from snyper2099:

For those that agree, here is something I realized a long time ago in relation to these so called "top 100" lists on sites like Pinside and ipdb...
If you look at the total # of times a game has been rated, that gives you the "most popular" pinball machines in the list. More importantly, I use it to determine the best games as well. It matches up with what I believe are HISTORICALLY the best games in pinball, MUCH more so than the suposed "top 100" games right now.
Case in point, newer Stern games that are just a couple years old can't earn a top ranked spot using my guidlines because it takes a lot more time (TZ has 1708 ratings, Star Trek LE has 460 ratings).
Is this perfect in determining pinball popularity? No, of course not. But being completely honest, I DO believe that it's a better historical "top 100 pinball machines of all time" than a machine with 100-500 ratings, that just happens to be awesome because it incorporates newer features that were not standardized in 1993 up in the top 20. It also helps to weed out those ratings that are low or high on purpose, just to try and push a machine up or down on the list.
This also holds true on the EM list. If you go by strict popularity (# of ratings), Fireball is #1(64 ratings). That holds a lot more salt than the "rated" #1 with only 3 RATINGS (Skyrocket), in my opinion.
I would probably change my mind if non DMD titles were put into a separate early solid state list but I'm not so sure that you can impove the EM list unless you said a machine needs a higher minimum amount of ratings to qualify for the top 50.