Strength as a Proxy for Mass

Strength as a Proxy for Mass (or SPM) is explained on page 20 of GURPS Martial Arts: Technical Grappling. It gives an option for resisting quick contests.
In a way it is sort of double-dipping because Mass-Based Moves on pg 9 already suffer a penalty against SPM and other things. So not only is an attack penalized based on the ST, but then ST itself (instead of DX) resists it on the other side.
==See also==
*Brute Parry, a similar concept but an active defense against attacks.
Category:Rules