I don't understand what's missing from the explanation Cliff, the designer of the machine, gave. Going from Analog to Digital and Digital to Analog creates noise. It's a wideband output so that it doesn't color the tone in any way, which also passes the noise, but within the factory specs of 110db. This means that if you wish to use any sort of outboard processing and don't want your tone to be colored by the output of the axe fx, use Output 2. If you feel that there is too much noise doing it in this manner, Fractal will mod the box for you to reduce the noise 3-5db, but it will not be a wideband output and it may color the tone. Doing both is impossible due to the laws of physics.
How is that not a thorough explanation? If you're wanting to know why he decided to make it wideband, he even explained that. He said it was because he was getting complaints that output 2 of the gen 1 units was coloring the tone, so he decided to make it wideband for the gen 2 units. There's no guessing going on here; that's the answer from the designer. Nobody is attacking for asking "potentially negative questions about the almighty Axe-FX II". It's just that this question has been asked several times by the thread starter even after the answers have been given in his other threads.