I haven't noticed the defense scores, but I noticed that the ability scores seemed to be off. If I remember correctly, the highest of each "defense pair" stat should be 13 +1/2 level, and one should be 16 + 1/2 level. Some of the numbers were off, but I don't remember exactly which one. Maybe that results in different defense scores, too? Either because the values become adjusted above their original score, or start lower?
That what I am trying to get to the bottom of:
The DMG1 uses:
AC = creature level +12 (artillery, brute) or +14 (skirmisher, lurker, controller) or +16 (soldier)
NADs = creature level +12
I am just trying to check if the DDI monster maker uses the same principle.
note:
One of the things that prompted this investigation was a level 1 soldier that Derubaskull created with the DDI monster maker that had an AC of 20 which seems very high for a level 1 standard creature (I would expect an AC of 17)