Cyrus spares Croesus' life when he realizes he is an ordinary man. First Cyrus orders that Croesus burns to death on a pyre because he wants to prove that he has supernatural powers that would prevent him from burning. Then Cyrus changes his mind. However, his servants can't put out the flames, so Croesus prays to Apollo and a storm extinguishes the fire.
In the end, Cyrus is certain that Croesus is a good man and makes him his advisor.
Answer:
"Switch horses and race normally. The one who won, initially had a slower horse."
Logical fallacy is a flaw in the structure of a deductive argument which renders the argument invalid.
Answer
The logical fallacy is him saying "what more evidence do we need" when they have no evidence to suggest it is bad other than the statement that it is bad.
Hope this helps