I have a speckled sussex, too, and my russian orloff has less white, redder feathers, yellow legs and a shorter comb. They aren't that similar. Also, I have pictures somewhere... I look into trying to get one.
I have a problem. I'm trying to get eggs from certain hens to hatch for a project, and this hen in particular won't lay. The only other chicken that I have that doesn't lay is an almost-8 hen who's never laid. The hen that I'm trying to get to lay is called Clementine, and she's a Russian Orloff...