As far as I know, that text is straight out of the manual. Divine Champions by default only require a non-evil alignment (or is it any good?) and a weapon focus in any melee weapon. They are also arguably a step below paladins, having fewer of their abilities. In Layonara it is more like the other way around, and you must be of your deity's specific alignment, and have weapon focus in your deity's favored weapon. Toran's is LG because Toran is LG. If we had Divine Champions of Rofirein (and I kind of feel that we should have just had a class called "Divine Champion" instead of adding copies for different names, then you could take it for a few more appropriate deities as well), then he would be LN with focus in the bastard sword, though you could make the case that he'd do well enough with any bladed weapon.
They are the chosen, the elite, the ones that capture the complete will of the god. There is no one-step slippage or warring interpretations of dogma, there is just straight worship of the core of the faith. Best of the best and all that.
It is of course kind of funny to have 3 different divine classes that are all supposed to capture the will of a god, so who knows what they think of each other. The high level cleric is arguably the most favored, having hordes of blessings bestowed at their wish, and the paladins typically follow their orders, yet are the bright shiny ones held to the highest of standards. But no, it's the divine champions held to the highest standards, selected by the gods... or wait...
It will be nice to just have a mix of different skills than several different class packages all claiming to be the voice, arm, or heart of a god.
I guess those would be cleric, paladin, and champion, respectively.