WHY? I Just Dont Understand Why

And Moria has Low damage (MUCH lower than Bapt, AND cant make someone invulnerable. ) How is this balance?

First, hold on, do you understand how Widow is balanced? Can you first admit that you do understand now how your first question was obvious?

Did you learn anything? Can you make any guess as to how a low damage Moira is balanced, based on what you just heard about Widow? Are you really learning about character balance for the first time here?