Little Single was advertised as 30 Gh/s. 75% of 30 is 22.5.
Yes, the little single was advertised with 30Gh/s. But if you are one of the first customers, there was no little single at this point in time.
You are correct, but as I already stated, in the interest of having diversity of my mining devices (for testing BFGMiner against all possible devices), I changed one of my Singles to a pair of Little Singles.