Actually, the resistance bonuses (stamina, will, and magic) for every race I could find (fantasy and sci-fi) added up to 30, so that shouldn't even be considered relevant. In the HARP fantasy setting, the endurance bonus and PP bonus always add up to 60, but that same statement doesn't hold true for sci-fi (ceran 65, gorsiva 55, krakur 50, silth 65). This seeming irregularity was what confused me. But you're right, adding the PEP bonus always brings it to 70.
Thanks, Z, for pointing out what I missed.