If Ultron wanted to actually shame the Avengers, bringing them and their reputation down, he could've done everything possible to make the Avengers fail. He could've had his robots actually target civilians. He could've destabilized governments by trying to hack into and bring down different networks, destabilizing the economy. He could've directly gone after significant world leaders and their governments. He could've spread his robots over the world, forcing the Avengers to divide themselves to try to stop it. And then, in the fight, we're led to believe that all of Ultron's robots can't 1) swarm the Avengers like a bunch of ants, 2) can't target civilians to stop the Avengers from saving them, 3) can't target the civilians as they're getting on the floating lifeboats? Yeah, AOU deserves criticism. In their effort to make a commentary of MOS, they actually fail to do so. They can't even provide the same conditions in which Superman is forced to focus on the World Engine and Zod, and not to try to pull individual civilians out of the path of the Black Zero's gravity beam or whatever you call it.