You made the discussion about linguistics by attempting to correct my English.
The Sadler's Wells dancers - or dancers at Sadler's Wells, because phrasing it that way for some reason is important to you - are usually professionals with professional training; not all dance training is ballet.
And the Breakin' festival is
literally an international festival of the best streetdance troupes from around the world. If Diversity aren't as good as them, so what? They're not the best in the world? Oh no, how terrible.
WTF does it have to do with this thread?