Ludicrous isn't it. I tend to judge a player in terms of the overall pecking order at the end of their career, as it encompasses all the ups and downs. No use coming out all guns blazing only to fade quickly. Consistent performance over a long period of time is the key. That's why Bradman, Chappell (G), Harvey, Ponsford, Border, Waugh (S), Hayden, Ponting etc are considered greats. If Clarke keeps it up he'll be in that company too, but not yet.
He's still class though.