I know what a native speaker is, but what is an “equivalent”?
Many people speak English as well as, and often better than, a native speaker. They typically combine a love of languages in general, a special fondness for English, extensive study of English in ways that natives never pursue, years of living in an English-speaking country (to acquire the natural rhythm of speech and use of idiom), and possibly some sort of natural linguistic gift. We proudly claim to specialize in finding such individuals, who also have the necessary teaching skills, to provide the best possible camp discussion leaders, whether or not he or she learned English as the first language.