Power Cycler blessing not possible to get anymore?

Do you mean solely the fact that orange-grade items have two blessing slots (and thus one of them not being Power Cycler increases the change of another one being Power Cycler), or do high-grade items generally have higher chance of getting better blessings?

In other words - blue and purple items have only 1 blessing slot. Do purple items have a higher chance to get this blessing?

EDIT: fixed a typo