"fatboy"
really? I mean isn't that like fattist?!? - I thought it was called the Jumbo Bible?
Details are important.
Anyway, I think you might - from a technical point-of-view - have this reversed?
What is the history of the Jumbo that AvoidJW is claiming to be the Jumbo?
Compare the front covers between the 'claimed' and the 'actual' Jumbo (also showing thickness of spine) below: