The other day, I got an obviously good question in a Close Vote Review. Even if I didn't read the question, +11 with 3 answers is a bit of a giveaway. Today I got one where the question was almost incomprehensible.
Also, on sites other than SO (where I understand the queues are huge), the number of reviews needed is often low enough (single digits) that you usually notice when you get an extra one.
I don't mind - I'm quite happy to get easy-to-pass audits - but maybe they could be a little harder...