How similar would two people who have done the exact same programs be.

[apollolux]

This seems bordering on the "nature vs. nurture" debate. I personally tend towards "nurture" having a more significant effect on a person's development. Even if both people use the same programs, they come from different starting points, different pre-sub experiences, and there's only so far even subs can go before they reach the limits on what parts of the subconscious they can affect.