It's kind of ironic that the God of the scientists is vastly more powerful and amazing than the God of the Creationists. Creationist-God is actually not that powerful of a guy.
Just because God couldn't help against enemies with chariots doesn't mean he's not powerful. It just means he weighs the risks that the chariot dudes will totally kick ass, and decides not to tempt fate.
And the Lord was with Judah; and he drave out the inhabitants of the mountain; but could not drive out the inhabitants of the valley, because they had chariots of iron.
I think that refers to the iron rims on the chariots wheels. One look at those pimped-out death machines would give any being pause.