Re: 'All Our Yesterdays' theory
I'd gotten the idea in my head about Atoz and Losira replicas being very similar technology because of their similar attributes. Neither seem to be very formidable. Atoz told Kirk "You have done away with my replicas.". That certainly was an easy fight for Kirk, he hardly did anything!
Of course, that doesn't necessarily mean they were holograms. They could have been really crappy androids.
“All the universe or nothingness. Which shall it be, Passworthy? Which shall it be?”