It's not really that odd if you think about it.
A font is like a menu - number 15 on the menu in McDonalds, may be nothing like number 15 on the menu at The Hilton.
With a font, each character is assigned to a particular code (or number) - in the table skeleton you are using, the Williams Pinball font is specifically used to put commas every 3 numbers in a score. e.g. it changes 1234567 into 1,234,567. To do this it uses the fact that the Williams font contains "1" and "1," etc as separate characters - most other fonts don't have that, so you're calling up some random character if you use another font (in the Williams font "1," is being used instead of "Latin A with acute", and "2," instead of "Latin A with circumflex, etc)
...in my previous analogy McDonalds menu item 15 might be a cheeseburger, and if you went into the Hilton and blindly ordered number 15 would you really be surprised when it wasn't a cheeseburger?
Not trying to patronise you here, just trying to make you understand why it specifies that font.
Regards,
Dan.