This question already has an answer here:
When I look at the review queue's history for First Posts (as an example) on a beta site where I have a fair amount of reputation, I see my reviews and those of others.
However, if I look at this same page for another beta site where I have less reputation (academia.SE), I only see my reviews.
I also see this on a graduated site (travel.SE).
and on SO.
Is there a reputation threshold for seeing reviews by other users in the history tab, or is there another feature/nuance at work that I'm unaware of? If so, where is this defined on the privileges page?