Consider this user, Kozyarchuk from SO. The reputation league shows he gains 1,592 rep out of 1,593 in the Aug 9th week (this week).
But the rep graph says otherwise.
(Also, the profile shows he got 21 badges on Aug 14th 19:00 – 19:26 right after he was seen on 18:58, which should have been given long ago. Is it another bug?)