FYI, this proves your original theory is correct. The player has more levels won than the level he's on. ***Mods: Please see post @kiara_wael @bearwithme***
At least his current level vs. levels won is credible. How can he complete 15,000+ levels in just 7 days? That's an average of 89-90 levels per hour, assuming he's playing 24 hours with no sleep, which is still impossible.