I'm not an expert like the people on this forum, or a cat psychologist, but they look OK to me.
The big guy does not seem to be threatened by the kitty.
His eyes look relaxed, not dilated.
I would be more worried about the psychology of the little cat.
Make sure she has a safe place to go...
I found one like that before, a little older.
I called her Tiger Lilly.
If you feed her:
She'll be your best friend:
Her Mom came by a couple of times to visit her, then disappeared.
Good luck with yours.
I'm also trying to tame a large black Tom cat on my back deck.
I notice a couple differences between yours and mine.
Yours does look like a very handsom cat, but I would agree with this:
My Tom is probably a true feral. Mine won't play. I wave a mouse on a stick around and he just doesn't...