Kasumi may very well find some similarities between the Cylons and another creature in her reality -- but probably not the Reapers.

"Cylon stands for Cybernetic Lifeform Node. They were a race of sentient machines we created. They rebelled against us when they gained self-awareness and we were at war with them for a time. An armistice was eventually declared and they retreated into space for fifty years until they attacked us again. Those of us who did manage to survive did so in a ragtag collection of ships."

Gaius gives a little shrug at that.