I'd like to use Crysis for some environmental modeling so I'm interested in it in a technical way.

I bought Crysis Warheads from EA which says it includes Crysis Wars. After downloading and installing I have only one game - Crysis Warheads.

I applied a patch to Warheads but Wars patch doesn't work as if I don't actually have Wars as a stand-alone application and I don't see it.
EA tech support said that the only difference is extra maps and I don't need to patch Wars.

As I understand the SDK only works with Wars but not Warheads, so my question is, from developer's perspective how to make sure that I have Wars with all the files I would have if I got it on a DVD?

Thanks