Are the AAA games with city scapes using...? (about shaders)

So, games like GTA4, and Spiderman, are they using normal maps on their building windows? or just specular maps? If they are not using normal maps for window indentation, then they are using real geometry. And so, can Unity handle such a thing? Or would it be a good idea to stick with a flat surface and just use specular? BTW this question is not about the brick or other material, because pretty sure they are using normal maps for THAT, but windows, well, that is a different can of worms(sorta). Here's some links to spiderman and GTA. Spiderman: http://www.youtube.com/watch?feature=player_embedded&v=Z-J56N0chjE#! GTA4: https://www.youtube.com/watch?v=YGCtVBcvzFk