I mean, if you go to it it will invariably tag you as being unique, which might be true, but if you look at how it breaks those down it really makes no sense at all. Browse it on an iOS device, for example: the one in x browsers have this is just way off, because every iOS device will have the exact same data for many those metrics so it doesn't make sense–for example, there is no way on in 20 browsers show the same list of fonts as a stock iOS device.