typing assessment

I found this website called TypeOnline. You can practice basic typing skills or take assessment for typing words, numbers or words & numbers. My wpm is VERY HIGH, as i knew it would be--104 with only 1 mistake. However, my wpm when it's just numbers or when it's words and numbers is quite low. It sucks that they include "symbols" when it's just the numbers test, because I'd like to know how fast I actually type when it's just numbers on the number pad. I bet it's like 2000 wpm.