Requesters with 100 percent approval rate do not actually approve all content

Usually writers on iwriter are selecting requesters who have high approval rate. However it is observed that some requesters like Lenagr1 have 100 percent approval rate, however they are not approving many of the articles, they are rejecting more articles than many of the other requesters.
For review one article was rejected by Lenagr1, still the system is showing that they have 100 percent approval rate . Another article was submitted to check if he will again reject
A similar trend was observed for ashleycairns4793 and johnkenny619
It would be interesting to find out the loophole being used to show 100 percent approval by requestors who are actually rejecting articles