That is a really interesting list.
The number for the Bible is a bit misleading because it is "at least one book translated". I think the number for the most translated "book" would be preferable. Its a bit inconsistent with how it treats series too.
There are quite a few things that surprised me in the list (either a lot more or far fewer translations than I expected, especially relative to other works in the list)
> Wikipedia gives 2191 for "at least New Testament", which I assume means all the books of the New Testament
Yes, and that number is too low because some single books you be translated mroe times.
> So it's still #1, since #2 (Le Petit Prince) is at 610.
I am not disputing that. The Bible is far ahead of anything else.
> It wouldn't surprise me if the number for the four Gospels is higher than the full New Testament number.
As there are separate translations of the gospels (e.g. the Lindisfarne Gospels) that must be true. I would be interested in know things such as whether any particular gospel has more translations.
Wikipedia gives 2191 for "at least New Testament", which I assume means all the books of the New Testament, and 698 for the Old and New Testaments. So it's still #1, since #2 (Le Petit Prince) is at 610.
It wouldn't surprise me if the number for the four Gospels is higher than the full New Testament number.