I don't really like discussing whether a player is world class or not, I think it generally lacks nuance and often people have too differing definitions on what world class is and isn't.
What I (and many others) would say, is Stones is definitely playing at a very high level that any team in the world would be happy with.
What I (and many others) would say, is Stones is definitely playing at a very high level that any team in the world would be happy with.