Are you referring to Hartz's statement? If so the statement refers to the measured effect in the experiment not the consequence of CP symmetry violation on the

Are you referring to Hartz's statement? If so the statement refers to the measured effect in the experiment not the consequence of CP symmetry violation on the makeup of the universe. He means that if the CP phase angle is far enough away from zero or pi (his "luck") so that it will modify the amount of electron neutrino appearance beyond what is expected given the theta13 measurement from Daya Bay strongly enough that this deviation will be statistically significant. His claim is that, with this luck, even by 2026 the significance of the deviation will be only 3 sigma. This is level is conventionally not enough to claim discovery of non-zero CP phase. Around that same time, DUNE will have begun operations. That experiment is expected to reach the 5 sigma discovery level.