This ingame guide is funny, it also has this for undead:

+567% Plague Contagiousness

Who creates this ? Is it from the devs ?

And if it is made by the game developers, how can you say that bishops post would override what the devs actually put online ingame ? I know bishop is discussing stuff with them and getting info and stuff all the time, but it is hard to imagine they would put some info online unless they actually programmed it into the game as well.