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The funny thing about IQ tests, and something that isn't often discussed, is that there are several different brands, with similarly different scales. So someone might peak out at 115 on one scale, and someone from another scale might have an IQ of 160 or something. This in itself makes them a relatively useless mode of measurement.
People who actually work with IQ measurements know the different tests and know you have to compare apples with apples. If it's done properly, the scores are standardised based on a population sample taken from the subject area. So it's not enough to just say "my IQ is 160", you also need to know the test used and the standard deviation of the sample.