Iron Man 2 is also very much Iron Man's superior, although partly by default. The first movie was stuck with a pedantic origin story. However, the sequel had no shortage of possible paths to take. Which did it choose? The way you should always go; the road of characterization. Rather than tediously expand upon its universe, Iron Man 2 simply reprises its dramatis personae and sticks them into situations graver than before, upping the ante but reiterating the overall heart and spirit of its predecessor.
Iron Man, cause I do like robotic scenes and hi-tech fiction film. It's great watching how sophisticated the human inventions are
I don't see why you are comparing these two movies. Both of them belong to two very different genres :\
I do not think I can choose between them. Both are very successful films in my opinion. I think they are the top 10 films seen by me.