The possibility that he's lying isn't 0%. He absolutely could be lying as part of some grand narrative he's forming (probably involving himself wearing shades and striking a cool pose).

I just think it is highly likely that he isn't, because lying about the numbers would harm his chances. If anything, it is slightly more likely he is lying about the entire thing, but the ability 'rewrite' plus how Karifean loves the writeups deems that also a fairly remote possibility.