Rokuougun vs Reject Dial

[ahill1]

I think I've made this thread before, but always seemed fun to speculate.

The Reject Dial is given as a wayy more powerful impact dial, given in some translations as 10x more powerful, but the Rokuougun (Lucci's attack) is described by Luffy as "it looks like an impact dial, but a lot more powerful". It nearly KO'd Luffy when used in 2, and the Reject Dial basically killed Eneru.

So?

 

[SSJ2]

Probably the reject dial. Luffy was able to take 3 of Lucci's Rokuogans without dying. I can't see him taking 3 reject dials even if he was stronger than in Skypiea.