vocabulary profiling

I think that a non-native speaker would score the test better because a native speaker knows the most of the words in their language even if these words are not used so frequently. But a non-native speaker can realize frequency levels better because, if the word is familiar to him/her, then it is frequently used but if it is not familiar, it is not a frequent word for him/her. Also, I was surprised by the frequency levels of some words because I heard some of them for the first time and clicked on the least frequent button but they are more frequent ones instead. Furthermore, I do not think that it varies from American English to British English although they have some differences between their vocabularies. The differences mean same in both versions. For instance, one calls 'soccer' while another calls 'football' to the same thing. Lastly, It is good for teachers that they will teach from the most frequent ones to the least. This also helps students in terms of learning easily and they can communicate easily when they know frequent ones even if they do not know the least frequent ones. The reason is that, nearly all the speakers know the most frequent ones so that you can both easily understand and others can also understand you while communicating.