And Nirvana's drummer looks like Dave Grohl

fun fact: the reason no one knows that superman is actually clark kent even though they look exactly the same was because during the golden age of superman, he used to have the ability to change his face (one of the many abilities he could come up with on a whim) and once they got rid of that power, they couldnt hide his identity without making a huge alteration to his image (i.e. giving him a mask)

I don't know why you're saying that. Look at that picture, they're clearly not the same person!