Electa was still translating the book of the incubus, but from what she had already translated, they knew that the dual cultivation they were practicing depended on the cultivation of each side. Liam would benefit more the stronger his partners were, especially if they were virgins during their first session together, while his partners would benefit more if he was the stronger side.
As they had already experienced, every cultivation session could be beneficial to their magical growth. Even the strongest could benefit from cultivating with a weak partner.
The special herbs he already knew and used played a good role in improving things for the stronger side, making it more interesting to cultivate, even with low efficiency to the stronger side.