I agree with you. Then, I looked it up and found a You Tube Video that has both the good and bad endings on one video:
"120 endings" There are lies; damned lies; and then there are statistics!
There are two endings with the Mad Doctor -- paint and thinner.
AFTER the ending, there is a parade with about six significant variations, like
1) The First Boss Dragon -- paint or thinner mode;
2) The Second Boss Prescott's Machine -- paint or thinner mode;
3) Horace and Clarabelle;
4) Donald and Daisy
5) Spatters & Ghosts
6) The Slobber
I guess you can exaggerate the deceitful, lying statistics into a tree
Scenario A) Doctor Paint, Variables 1 - 6 Paint;
Scenario B) Doctor Paint, Variable 1 Paint; Variables 2 - 6 thinner;
Scenario C) Doctor Paint, Variables 1 & 2 Paint; Variables 3 - 6 Thinner;
Scenario D) Doctor Paint, Variables 1-3 Paint; Variables 4-6 Thinner;
Continue all the variations, and that is how he could get many "ending scenarios".
- - - - -
In my opinion, the writers of the Prima Guide Book did not play the game. There are too many errors. I bought the book a couple weeks after playing the game to the credits. I could not find a way to "restore Wasteland" the way the game was advertised, including restoring the Ostown Fountain and doing the Epilogue to find a way forward into more game.
The book acknowledges that the information came from Junction Point. The book is wrong about many things.
If you follow the Prima Guide's Walkthrough, you cannot complete the Camera Shop Quest or the "One Toon's Trash" quest.
If you follow the Prima Guide's Walkthrough and Quest Section, you cannot get Clarabelle to be Horace's assistant.
If you look at the Prima Guide Quest Section, it does not have the correct number of Gremlins to save. All you have to do is go into the Pause Menu to find the number.
There are many other examples.
So, how can they say they were so meticulous to count about 120 endings, and not know the basics of the game?
I'd like to see that man's Saved Game!
EDIT: CLARIFICATION: I am talking about the Prima Guide Book that I purchased. Prima may have made changes to the online guide. If you would like quotes from the book, I can furnish them.
Meanwhile, I have posted Topics on how to get Clarabelle to be Horace's Assistant, how to do "One Toon's Trash", where the Gremlins are trapped, etc.
And, we have tried to cover the many things that the Guide does not mention. For example, I am grateful that this site taught me how to do all the 5 DECs, after getting the 16 films -- which meant going backwards over high gates.