Throwing the tissue away, Luke said, "Okay, get ready to fight. Loki used himself as a distraction. His escape means that the plan is now complete. I'll be waiting for him in New York."
"New York?" Tony was surprised. "Why New York?"
Luke said, "…Maybe because it has the largest audience? After all, Manhattan is the center of the universe."
Stumped for a moment, Tony then figured it out. "Loki is an egomaniac. If he wants to do something big, he definitely wants a large audience for it; Manhattan truly is the best choice." It was an analysis of Loki's character that produced the correct results.
Luke was also amazed.
He had only been going on what he knew of the movie plot, and on the drawing of Batman and the missile, and just knew that the plot would unfold in New York.
For Tony and Loki to be able to think the same way was probably because the both of them were narcissists.
After exchanging information, they immediately got to work.
