Billy doesn't kill Homelander in the comics. The interactions between them are more nuanced and don't end with Billy being the one to cause Homelander's death.
Butcher manages to kill Homelander through a carefully planned and executed strategy involving a combination of surprise attacks and exploiting Homelander's weaknesses.
Soldier Boy doesn't kill Homelander in the comics. The story is more intricate, with various factors influencing the interactions and fates of these characters.
Black Noir kills Homelander in the comics by catching him off guard and delivering a fatal blow that Homelander couldn't defend against. It's a thrilling and decisive moment.