Question on cruel cubing

[Kasreyn]

I have a simple question about cubing items in 1.10 Open (in case Open makes any difference). For instance, I have a blue Colossus Sword which I'm trying to make into a socketed Cruel. I haven't touched it yet. Using an editor - *without altering anything* so please don't jump on me - I checked its level; it's 87. (Dropped in WSK).

So which would serve me better: using the 3 pgem reroll, the 3 chip, the 3 normal, or the 3 flawless? I'm aware that all of these can get a cruel affix for me. I don't need to be told that. What I want to know is, will one of the recipes have a higher chance of cruel per transmute attempt? Ie., will the ilvl 30 from flawless recipe have a slightly higher chance of a cruel affix than the ilvl 25 from the chip recipe?

I'm assuming the answer is, "there's no difference in the probabilities", but I wanted to check anyway.