Try and find a photo of a bike saddle and discern a 1 degree slope from level. When people are talking about nose up or down they don't mean by an inch or two, they are talking one or two degrees at most. That is such a subtle change that no one's eyeball can see it in person let alone in a photo.

I use the clinometer app on my bikes. My MTB was nose down by 2 degrees and my road bike was nose down by 0.5 degrees. That was measured by sitting the iPod on a board on the saddle which itself has numerous slopes depending on where you look. The back of the saddle slopes towards the middle. The nose slope upward then finally leveling out.

Here is an example to give you an idea of how the slope of the saddle changes from front to back.