Quoted from iceman44:Who would buy a pinball machine just because its built like a tank and looks gorgeous as the main reason? Nobody i hope
Theme
Software
Artwork
Price
This is just comparing Batman, Alien, Dialed In and I'll throw Domino's in there since it's shipping at the same time.
Theme - Alien
This will vary depending on the person but Alien is an awesome theme to me.
Software - Dialed In
This might be a tie with B66 but Sterns have always taken awhile to get the code done.
Artwork - Batman
It may be just a collage of images but I think it works well and makes an impression while the other two are kind of mediocre.
Price - Domino's
It's lower.
These are the things I can judge from my computer. Gameplay can't be judged till I see these in person though the response of people who played Dialed In has left an impression.