Further calculations of hundreds of hetero-dimers in the C22-X and PC113-X series justified the generalizability of our findings. The dimer fluorescence energy is always redshifted compared to both monomers due to superexchange, regardless of the monomer structure and intermolecular configuration. Moreover, the dimer oscillator strength predominantly depends on the monomer with the lower fluorescence energy. When the two monomers have similar energies, the strong ACQ effect happens. This is because the exciton of the dimer S1 state is mainly contributed by the most stable monomer LE state. The proportion of the CT state is maximized when two monomers have similar fluorescence energy, which further reduces the oscillator strength in addition to the TDM cancellation effect.