I actually agree with you and thanks for the interesting exchange. The 98% for the Wechsler is indeed, about 130.2. There are other exams that hit the 98% at 148 and even higher. Perhaps this is the difference between the genius and the ordinary smart person. The genius will agonize about not scoring higher on a particular IQ test, but the ordinary smart person will simply take a different IQ test.
LOL!!