As far Luffy mind reading Iron Man, the thing is that Extermis Tony is a supercomputer. His brain operates like your typrical computer in terms of operating the armor suit. He is not going to have same typical brain power that of a human. I mean Part 1 Luffy could fool Enel by duming down his brain, you have to wonder if Luffy could even interpret the actions of some moving cybernetic armor.
Well... I learned something. Or perhaps realized something. Iron Man using sonics would take Luffy down *sobs* lol. So yeah, luffy gets deafened and Iron Man melts the rubber man. Luffy may be able to dodge for a while with haki, but whatever pain Luffy would get from the sonic attacks I think would be enough of a distraction for Iron man to get him. I did actually learn Iron man had way more speed than I gave him credit for.