Batman and Iron Man, both are men who rely on technology.
They have similar backgrounds, both are rich businessmen, Wayne has his company and Stark has his.
When it comes down to it, they are essentially just men in fancy armoured suits.
Funny how two of the coolest and most popular super heroes don't actually have any super powers!
When I first got into batman stuff everyone ever was recommending two Batman books to me like crazy:
The Long Halloween and Batman: Year One.
So I bought them off ebay and ending up selling them on ebay myself.
I just have to say there are far better Batman stories out there. In my opinion these two are overrated.
They're good, but I've read and enjoyed other Batman stuff a lot more since.