This is not a fair judgement. If by no one you meant in Greece I do not argue. If you say no one all over the world I will have to say you have little knowledge of world literature, particularly of ancient world literature. Greece and Latin literature enjoyed the privilege of publicity does not mean there were not other greater literary critics in other world literature. Ancient or modern Aristotle is not unsurpassed. Ancient and even medieval eastern literature is matchless in so many ways. Sanskrit is the mother of even so many European languages and Sanskrit scholars were matchless critics. However I reserve judgement to say they were greater critics than the Greeks or the Greeks the greater. It is like seeing one part of the mountain. Who knows the other unseen part of the mountain may be more beautiful. We have to explore.