Did some Saboteur vs. NM tests.
Poison vs. Lv9 Bubbly Bernie:
476 skill normally ticks 100,67,34,1,0
476 skill Saboteur ticks 100,59,18,0
500 skill normally ticks 100,63,27,0
500 skill Saboteur ticks 100,55,10,0
500 skill Saboteur+12 ticks 100,50,1,0
Gravity/Gravity II:
Base speed is given as 40
Gravity normally reduces to 30 (-25%)
Gravity Saboteur vs. Bernie reduces to 27 (-32.5%)
Gravity Saboteur+12 vs. Bernie reduces to 26 (-35%)
Gravity Saboteur vs. a gobbie reduces to 20 (-50%)
Gravity Saboteur+12 vs. a gobbie reduces to 18 (-55%)
Gravity II normally reduces to 27 (-32.5%)
Gravity II Saboteur vs. Bernie reduces to 25 (-37.5%)
Gravity II Saboteur+12 vs. Bernie reduces to 23 (-42.5%)
Gravity II Saboteur vs. a gobbie reduces to 15 (-62.5%)
Gravity II Saboteur+12 vs. a gobbie reduces to 14 (-65%)
Seems like Saboteur's bonus is actually reduced to +25% vs. NMs instead of the +50% we thought it was. On the plus side, Empyrean Gloves appear to provide the same bonus regardless of target, but it's still a big step down.
"New" max for Distract/Frazzle III vs. NMs:
120 Base
*1.37 Saboteur (164)
+10 dMND (174)
*1.24 Potency (215) or *1.3 Potency (226)
If you're curious, the "old" maxes were 244 or 256 (difference of 29 or 30) assuming Saboteur+12 was +56% instead of +37%.