Arthur listens quietly as Edgeworth speaks, taking the chance to start digging into his food as well. He's not as voracious as Barry, or- as it seems now, Edgeworth, but he does have an appetite appropriate to a man of his build and activity level. It just helps that he was raised by a rather reserved man in the solitude of a lighthouse, and then had to learn the decorum of being a king.

"Superpowers and technology like what we find here aren't all that uncommon where I'm from, but they do manage to be strange at times, even for someone who lives in Atlantis." He lets that one drop easily and continues back to eating; it wouldn't be strange if he were met with disbelief, so he sees no reason to hold that back. As for what Edgeworth is holding back, he doesn't feel like prying at the moment. It couldn't be all that essential.