The more that I think about Superman's speech at Lex, the worse it gets. It's basically Superman begging Lex to accept him as "one of the good ones" 
Superman: "I'M JUST A GOOD OL' ALL-AMERICAN COUNTRY BOY. Don't view me any different, Lex!
"
As if his speech is going to change Lex's mind. Also, Superman shouldn't give a fukk about what Lex thinks in the first place.
Superman is an alien but that's not what matters. The thing that matters more is that he's empathetic and cares about humanity.

Superman: "I'M JUST A GOOD OL' ALL-AMERICAN COUNTRY BOY. Don't view me any different, Lex!

As if his speech is going to change Lex's mind. Also, Superman shouldn't give a fukk about what Lex thinks in the first place.
Superman is an alien but that's not what matters. The thing that matters more is that he's empathetic and cares about humanity.