LV 20 Op, STR 1, DEX 130, INT 12:
Lv 1 Mind Wrack: 35-40 damage
Lv 1 Lurch: 32-37 damage
Lv 1 Neural Shock: 33-38 damage

Lv 20 Op, STR 1, DEX 35, INT 107:
Lv 1 Mind Wrack: 33-38 damage
Lv 1 Lurch: 30-35 damage
Lv 1 Neural Shock: 31-36 damage

Lv 20 Op, STR 96, DEX 35, INT 12:
Lv 1 Mind Wrack: 30-35 damage
Lv 1 Lurch: 27-32 damage
Lv 1 Neural Shock: 28-33 damage

For Ops, DEX > INT > STR in terms of skill damage...so DEX will give us the most amount of skill damage possible. Just need confirmation that STR is for Commandos and INT is for Engineers. My other thought was that skill damage is directly correlated with damage, and NOT with STR/DEX/INT.