Your Strength is increased by 2 points, but you lose 2 Action Points. The 2 stat points gained by this trait can be used on any SPECIAL stat, like with Small Frame and Gifted.
J.E. Sawyer's Fallout RPG[]
Your Combat Sequence is decreased by 4 points, but your damage with melee and unarmed attacks are increased by 2 points.
Van Buren[]
„A little slower, but a little bigger. You may not hit as often, but they will feel it when you do! Action point costs for melee and unarmed attacks are increased by 1, but your damage with melee and unarmed attacks are increased by 20%.“
In-game description
Action Point cost for melee and unarmed attacks are increased by 1, but your damage with melee and unarmed attacks are increased by 20%.