As far as I've been able to find with experimentation, Offset is a bonus the part applies to the whole. 0.2 for instance provides a flat 20% boost in, say, Moving.
Efficiency applies only to replacement parts, and refers to how much of the previous part they replace. So a peg leg slows down a pawn because it is only some percent as efficient as a meat leg. A bionic part is better because it as efficient as a meat leg and also provides a boost.
(At work and would need to see the defs for better/more accurate examples)
Efficiency applies only to replacement parts, and refers to how much of the previous part they replace. So a peg leg slows down a pawn because it is only some percent as efficient as a meat leg. A bionic part is better because it as efficient as a meat leg and also provides a boost.
(At work and would need to see the defs for better/more accurate examples)