Remmeber that quickstrike is a more abstract system.
Example: in BTECH, your MP will be reduced if any critical hit affects any leg actuator. So in QS, when the effects says "MP reduced" could be that you hit any of the legs.
Example: In BTECH, when you destroy a weapon, the overall damage input of the ride is reduced, So in QS, that should mean that you destoyed one or more weapon when you roll "-1 to all damage brackes"