Again, this works differently as other say scripts say only 1 letter at a time, as this ones says 2. All those variables and Lists on screen show a bit on how this works. You can observe this by seeing that regular say scripts are quicker/slower than the Mettaton one. AND you can observe (The "A" variables in each sprite) the fact that it goes through 2 letters at one time because when there is a odd amount of letters The Regular Say Script will always be the exact number, while the Metta one always ends on even numbers. Oh yeah, and if you're wondering, the test "1" is one of the longest words in the world, which is why I used it.
:p