Np, glad to help :)

Wow! Thanks for that site..

Yeh people have :o
psnprofiles.com/trophy/1649-XCOM-Enemy-Unknown/…
here you can see the trophy is ultra rare. Only 2.64% of the people who own the game (and are tracked by the site) beaten the game on ironman.
The % in total will probably be much lower, because it's a site for trophy hunters ;)