So, in the spirit of comparing the penalization of misses between the scoring systems of the three games, and without thinking very deeply about it, it looks like your score (with a miss) became almost twice as bad in IDPA, more than twice as bad in KSTG, and also more then twice as bad in USPSA. In this instance, the order of punitivity of the three games is IDPA, USPSA, KSTG, and USPSA and KSTG were much more similar to each other than either was to IDPA.