Howard Berg doesn't actually
read that fast. All he does is link key words together to get meaning. And it's not even a page a second. It's at least 2-3, unless he thinks he knows everything where he then
skips the information. This process can become very confusing on certain material, especially when trying to always go as fast as possible, which he teaches.
With Photoreading you can go directly to the important information if you wanted to, and it first goes into the subconscious so it is easier to remember and recall, especially with mind maps. And syntopic reading and direct learning seem to be valuable learning skills too.
And what do you mean that Berg is an "advanced problem solver"?