Ahhh, that's how you know! Sorry for doubting you. Maybe you should share your knowledge of how they could easily optimize the their game for the 360, so that it can fit on a single HD-DVD disc and still look as good as the PS3 version. I'm sure they'd be oh so grateful.
Or you know they could of just put it on two discs. I know I'm a genious no need to thank me.