I was looking at the avatar chart (https://www.lingq.com/en/help/avatar/) where it lists the number known words to reach different levels (B1, B2, I1, I2, A1, A2), and the numbers do not appear to be correct.

For example, it lists Japanese A1 to be 20,750 known words, but looking at my own profile, I'm at I2 with ~13,000 known words and it says I have ~14,000 words to go. The math doesn't add up.

I don't care what the numbers are, I just want the documentation to match. Can someone provide clarity?