It's interesting though, At lv80 if I craft a lv80 item progress efficiency is a base 390.
A lv78 item I have 661 progress at 100% efficiency.
A lv76 item I have 730.
A lv72 item I have 818.
A lv1 item is 924.

So it scales all the way from 1-80**.
Ingenuity's tooltip slightly lowers recipe level, while Ingenuity II simply lowers it. If the level reduction is capped to Ingenuity, then II is basically a dead skill that serves absolutely zero purpose. Possibly II is glitched.