These rankings USED to be more relevant 5 or more years ago when Australia didnt recieve 100 containers of pinball machines into our shores, because some titles like some of the Ballys/late 90's B/W were very hard to get n play cause most people in the USA and private collectors in Europe wouldnt part with them. Then along came more n more Euro container imports n the whole game changed.
(Rankings on IPDB change every month, sales numbers also become superceeded every month or two also with new titles coming out.)
Now that every man n his dog has imported dozens upon dozens of every title known to man, and prices have dropped, the so called A and B titles arent so hard to come by, so the lines of what is a A title and a B title have become very murky. I have played alot of the old B/W so called A listers, and find the current crop opf Sterns to be far better machines...thats my taste, but the next bloke will like the older machines more. There is no right or wrong answer.I love my Segas n my Data easts. All great machines.
These days, I believe whatever you like to play and collect the most is your own A and B title. Its no longer just Ballys. Alot of Sterns now are peoples A and B titles. Even older stuff like High Speed 2, Creature, have become more n more collectable. The A and B titles that other people say are the so called A and B titles might be theirs, but they are different to each n every collector.
Personally, my A and B titles change every month, because my taste changes every month. Probably the same for alot of collectors.