No, actions makes the AI use a different algorithm to decide what to use. If you turn actions off, they will use RMXP's default decision algorithm. If you turn it on, there will be an equal chance to an attack or a skill. e.g. if you have attack and 3 skills, the chance that the attack will be used is 25%. What is used in the end is random. Exceptions are, of course, healing skills, defending and escape which are calculated in a different manner.