Different printers may produce slightly different outputs.
"You also have to take into account the device (printer) that the document is printed on. That may account for things such as the "th" (like in 14th) not lining up exactly."
Perhaps. However, the same effect can be reproduced in MS Word. With minimal effort, a forger could easily raise or lower typed characters, regular or superscript, with ease to give a document a greater feel of having been originally typed.
One need only go in MS Word to FORMAT, then select FONT, then select the CHARACTER SPACING tab. On this tab you can play with the Position drop down to raise or lower a single letter and or superscipt. You can even select how many "points" to lower it by. The default on my computer is to 3pts when raising or lowering characters, but this can be increased or decreased.
Bottom line, one can use Word to reproduce the effect of the raised superscript, or even letters following slightly below other characters on the same line - mimicking type.
I was able to do this in a few seconds to raise the superscript "th" higher than the default setting, or to lower or raise characters on a given line. I'm not a techie type, so I don't know how to post the example to FreeRepublic, but anyone with Word can reproduce the effect per the instructions above.