G'day Daniel,
A review is particularly appropriate when the close is not what you'd expect from a simple count of "keeps" and "deletes." For example, if an AfD registers (lets say) four "keeps" and twenty "deletes" but an admin closes it as a "keep," there's some point in finding out why... or in convincing the admin that he ought not to have done it so that he won't do it again.
Er ... what?
Did you wander away from your computer for a second, only to find that some malicious daemon (who, clearly, is not as smart as you are) had typed a paragraph and sent it off before you could return?
Since when was a closing admin required to follow the vote count, and since when was failing to do so an excellent reason for re-education procedures?