But in any case, the argument of the pagans having a socially effective religion (suggested in chapter 4) that we can all go along with is simply irrelevant. As much as they may or may not be real, the gods themselves live completely immoral lives. Even if we wanted it to work, syncretism is simply impossible because of the nature of pagan theology.
And if we need more evidence of that, they spared (and eventually blessed) the fratricide Romulus. We of course would think of the story of Cain and Abel, where the justice of the true God is clearly displayed in a similar event.
The pagan gods provide no discernible worldly help to their followers, as history shows us time and time again.
If the gods couldn't protect Troy, why on earth would the Romans (according to legend the descendants of the Trojan Aeneas) turn to them for protection and help?