You know, we have yet to actually see Shura in combat, but thus far, I don’t think he’s that smart. I mean, making a public announcement that you’re going to destroy all machines just to lure out Ziggy? Even if that did lure Ziggy out, the damage to the Nero Empire would be near-irreparable. Either way, he would lose something. But his biggest mistake is the one that he doesn’t even realize he’s making. He pissed off Shiki, and that’s going to be his downfall.