TFBT: Sarpedon Versus Hector

I was trying to find some insight in all this, but didn't. The contrast between the decision to let the demi-god Sarpedon and the decision to ket the Hero Hector die;

"Shall we save Sarpedon?" (Book 16)

The son of scheming Kronos looked down upon them in pity and said to Hera who was his wife and sister, “Alas, that it should be the lot of Sarpedon whom I love so dearly to perish by the hand of Patroklos. [435] I am in two minds whether to catch him up out of the fight and set him down safe and sound in the fertile district [dēmos] of Lycia, or to let him now fall by the hand of the son of Menoitios.”

And ox-vision Hera answered, [440] “Most dread son of Kronos, what is this that you are saying? Would you snatch a mortal man, whose doom has long been fated, out of the jaws of death? Do as you will, but we shall not all of us be of your mind. I say further, and lay my saying to your heart, [445] that if you send Sarpedon safely to his own home, some other of the gods will be also wanting to escort his son out of battle, for there are many sons of gods fighting round the city of Troy, and you will make everyone jealous. [450] ...The sire of gods and men assented, but 459 he poured down [kata-kheîn] bloody drops [psiades] to the earth [460] in honor [tīmē] of his son whom Patroklos was about to kill on the fertile plain of Troy far from his home.

 "Shall we save Hector?" (Book 22)

“All the gods watched them, and the sire of gods and men was the first to speak. "Alas,” said he, “my eyes behold a man who is dear to me being pursued round the walls of Troy; my heart is full of pity for Hector, [170] who has burned the thigh-bones of many a heifer in my honor, at one while on the of many-valleyed Ida, and again on the citadel of Troy; and now I see radiant Achilles in full pursuit of him round the city of Priam. What say you? Consider among yourselves [175] and decide whether we shall now save him or let him fall, valiant though he be, before Achilles, son of Peleus.”

Then owl-vision goddess Athena said, “Father, wielder of the lightning, lord of cloud and storm, what mean you? Would you pluck this mortal [180] whose doom has long been decreed out of the jaws of death? Do as you will, but we others shall not be of a mind with you.”And Zeus answered, “My child, Trito-born, take heart. I did not speak in full earnest, and I will let you have your way. [185] Do as your thinking [noos] tells you, without letting up, without hindrance.”Thus did he urge Athena who was already eager, and down she darted from the topmost summits of Olympus.