Well, sorry about that. It's just that they looked identical.
They do look similar insofar as they're both blonde girls wearing blue space suits. But I mean, there's only so many variations of hair and suit color you can have, you know? Some things are bound to intersect when there are billions of character designs out there. I should point out However, that their eye color, suit design (well, as much as form-fitting suits can HAVE a design), acompanying powers, and generalized statures etc. are different.
Official game art from Metroid: Other M:

Samus from the official live-action trailer:

Samus from art book:
VS.
Aurora (older art):

Aurora (middle art):

Aurora (newer art):

I guess my point is, they are similar, but they aren't IDENTICAL. Identical means exactly the same in every way. Maybe this is just the fanartists community doing their inevitable thing, but most images of samus I've seen tend to be a lot more sexualized than Aurora ever was. And actually, I think Samus' blue suit actually looks more like Libby's from N Men than it does Aurora's

Also, in most fandom circles, it's considered rude to point out when an OC looks "just like so-and-so!" because generally artists took a lot of time creating a design, only to be accused of copying because their character looks like some video game or anime char they've never heard of.
Just sayin'
Corinne
P.S. Also I could be wrong, but I think I remember Mara saying that she actually drew inspiration for Aurora's outfit from Cindy's KoM spacesuit. So yeah, blame the JN animators