why does this look so right?

I believe Tasha Stark is a real character in an alternate universe. Of course your probably referring to these characters as a whole and making some sort of show, book or movie out of them and in that case, please dismiss this comment.

Yep. In Earth-3490, Tony Stark was born as Natasha Stark. She went on to marry Steve Rogers, which stopped the Civil War. LINK: http://marvel.wikia.com/Natasha_Stark_%28Earth-3490%29

No stick with Scarlett Johanson

No, I'm up for a male black widow.

I suggest reading the comments before you comment to avoid redundancy