Yea i realized that.... especially when i only need 20000miles for SIN-NRT with UA on mileage plus, but 40000 on SQ KF, and for 40000 i can use UA F!!! And i could have flew HKG-CMB with mileage plus using 20000 miles, but i think it needs 55000 with KF!!! huh!......the worst thing is that HKG-LHR needs 80000, but on Asiamiles it only needs 60000, also on JAL.... which HKG-LHR is the flight route i fly the most, but with 80000 it is not very good value!
and i really think KF is not that great since i can only get flight awards but not others, like hotels...