You can not compare the two since they do not use the same type system for perpage. Photopost uses that override thing to allow you more than the norm which is what reviewpost has.
I would have to do some thinking what the best way to combat things would be but I can post a quick thing to help here
In cathead.tmpl
find this and add in bold
Code:
Content visible to verified customers only.
In showgallery.php find this line and add the code in bold
Code:
Content visible to verified customers only.