"The great ballerina"...?...Why is that I notice an uncompromising feeling here..? He avoids to go too far as to name her "The GREATEST ballerina", or to be too soft to write "A great ballerina"... Is "THE GREAT..." phrase grammatically correct...? What is he really saying here...?
No, he means by 'The Great' the same thing as 'the Greatest', it's just a more theatrical thing to say 'The Great'. Gramatically it's all right, just a bit annoying. In this case also, since he wants to emphasize her 'a great ballerina' is probably not quite enough, but he should be content with 'one of the greatest ballerinas' or 'one of the two or three greatest ballerinas' (in that case, he wouldn't even have to say 'American', which is pretty much beside the point these days anyway, since everything is more accessible than in past epochs. But critics are sometimes able to promote performers they want to by hyping them up, so it's no big deal really. That's probably all it means.
Thanks Patrick and Happy New Year!!