Advanced Technologies Very Rare & Entity Sheet
The Advanced Technologies Very Rare sheet contains two copies of each of the 47 Very Rare cards and one copy of each of the Entity cards. If the Entities were actually mixed in to booster packs in these proportions there could have been more than 4 Entities per booster box.
Note that the depicted Print Sheets are just example layouts. I don't know what the actual card layout of these sheets were. In fact, the actual layout was likely more randomized to make it easier to pack boosters.