Morkus from Orkus
No. It just means that Wizards can have 40 pages, Clerics 40, Druids 35, Bards 40, etc., even though there are only 80 pages of spells.On the other hand, most of those wizard spells, and the vast majority of the spellcasting rules are shared by (too(?)) many other classes. Thus efficiency in terms of page count is probably still in the wizard's favour.
It's efficiency of space, not efficiency of class spell page count.