Lots of fun and enjoyment. But, I've got to say, Tony was quite a jerk for refusing to speak to Superman.
I agree, I enjoyed the story very much.
One comment, though. If the timelines are similar, then I could see Tony being a bit peeved that he had no assistance from the JL in his captivity, dealing with backdoor arms dealing, the Obadiah Stane situation.
Besides, they had to know who he was before the press conference--why not approach him before?
Now, if we can just get a fanfic version of the classic DC - Marvel crossover: Superman vs the Hulk!!! (By the way, did you know that Kryptonite produces gamma rays?)