pack size mod = more xp? really?

Unless you could somehow hack the game to give you the exact same map layout with and without the mods you will never know the exact numbers. Since you could do a white map which turns out to have really good spawns, and then you roll packsize on a map which turns out to have crap spawns, this map might not be better than the white one. That doesnt mean that you should not roll packsize on maps, maps with this mod will always be better than running them white, no exceptions.