Sun Mar 02, 2003 7:01 am by Norfleet
A shield takes 20% additional damage when struck by a weapon of the types it is weak against (photon vs. positron), and takes 20% less damage when struck by a weapon of the types it is strong against (photon vs. graviton). It takes base damage when struck by a weapon which is neither strong nor weak against it(photon vs. molecular).
Generally, the larger value will be better, except when you are facing a predominance of the type of weapon your shield is strong or weak against. Factor that 20% penalty or bonus when faced with those weapons.