Rome did indeed hate Carthage; but that was in history, not in the OP's campaign. If he won an easy victory over Carthage there is no reason why he should treat Carthage harsher than other cities.
I wrote that Romans left religions alone "unless these became focal points of rebellion".
For the record: the Romans were not entirely opposed to human sacrifice. They did it themselves after Cannae. And their resistance is somewhat hypocritical to modern eyes, as the Romans did celebrate human slaughter in the form gladiatorial games (which also had a religious origin).
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