There's one thing I picked up in the episode which was pretty subtle. Midway through the episode, The Enterprise detects an unknown ship entering orbit with no lifeforms.
We then see Lore, and he reveals was rescued from outer space by a Pakled merchant ship. He's also wearing wearing Pakled clothing.
When Lore's homing beacon was activated, I think he must have killed the crew. Assuming the Pakleds tried to stop him, what would have been his response? In this situation, Data used subterfuge and guile, not hurting anyone, because that's not in his nature. Lore, on the other hand, would had no qualms in killing people to forward his goals, because that's his nature.