No, not biased or political. I just don't attach undue significance to GWB's God talk, or think it necessarily implies he views the Iraq conflict as a holy war. ( I think it's being conducted for mostly geostrategic reasons, some valid, some questionable, but that's another thread in the making).
I think he lays it on a bit thick with the God talk (and I'm Catholic) but I see it as just a personal quirk. And a a lot of it is largely for public consumption (the religious right is a big chunk of GWB's supporters, though by no means his sole supporters).
Looking back in history, Abe Lincoln has a lot of God talk in his speeches, but in his private writings and conversations, his religious views seem Deist at most. A lot of it was just for public consumption.