That doesn't add up. It makes sense, but the math is wrong.
Specifically, the fighter and wizards defenses don't match that. These are the only two that come up short. The rest are spot on, or have mystery bonuses.
If your "scoop" is the case, then there are are also no defense bonuses given by class. For example: the paladin and fighter would logically get a Fort bonus, but there's no mystery bonus to use.
Paladin:
Fort: 13 (+3 from stats)
Refl: 14 (+0 from stats, +4 from ?)
Will: 16 (+6 from stats)
Cleric:
Fort: 13 (+3 from stats)
Refl: 12 (+1 from stats, +1 from ?)
Will: 17 (+5 from stats, +2 from ?)
Fighter:
Fort: 16 (+7 from stats, -1 from ?)
Refl: 13 (+1 from stats, +2 from ?)
Will: 12 (+1 from stats, +1 from ?)
Ranger:
Fort: 13 (+2 from stats, +1 from ?)
Refl: 15 (+5 from stats)
Will: 13 (+2 from stats, +1 from ?)
Wizard:
Fort: 10 (+0 from stats)
Refl: 15 (+7 from stats, -2 from ?)
Will: 13 (+0 from stats, +3 from ?)
Warlock:
Fort: 13 (+3 form stats)
Refl: 13 (+2 from stats, +1 from ?)
Will: 15 (+3 from stats, +2 from ?)