If the 1v1 ladder copy-pasted the true ELO math, then the maximum number of games to get ranked on the 1v1 ladder could only be 25. After 25 games, ELO calculates scores using a different K factor, which reduces volatility per games after 25. See
https://en.wikipedia.org/wiki/Elo_rating_system#Mathematical_details for better explanation
Edit: I have no idea what I'm talking about, apparently new players now have K=40 until 30 games
Just ignore me ^_^
Edited 11/5/2018 16:52:06