Why Superman is modern day Achilles

Superman and Achilles are similar on paper they both are invincible, super strong and have a strong pride and have an unshakable determination. they both at times have been blinded by there pride. the both have an Achilles heel though for Achilles it is literally his heel for Superman it is Kryptonite
Achilles was know for his power and invincibility on the battle field, Superman is renown in the dc universe for being one of its most powerful hero's.

Achilles kills Hector when he finds out that Hector had killed Achilles cusion dressed in Achilles amour. Superman does much the same (in Superman the animated series) when Lex Luther kills the flash.both Superman and Achilles were not born with there powers but gained them from an outside source for Achilles it was when he was dipped in the river synx and S when he first came to earth and Superman adsorbed the rays of the yellow sun granting them there amazing powers

So as i have explainedSuperman is just a modern day Achilles!