@TheKnightOfTheSea looks like this really was just a preview of the Gorosei's final war set up and giving us the readers a preview of what levels Luffy and Zoro still need to reach for Haki.
And if this is a mere preview of their capabilities... final war is about to be insane, good thing the Red Line is a giant place.
@SakazOuki the Saturn plot looks like will take interesting turn of events. Since he wasn't summoned, natural that he'd stay back. I'm assuming he's still alive tho, but it's a "suspense" thing for the readers. In that time Devon could do some damage being Saturn.
Their Haki built different tho, insane mofos.