Being some what follicly challenged, and to my wife's utter relief, the comb over is not something I have ever considered. The title is a tenuous reference to a formatting feature that Adobe offers in their PDF documents.
The comb provides the ability to equally space a string of characters on a pre-defined form layout so that it fits neatly in the area. See the numbers above are being spaced correctly. Its not a function of the font but a property of the form field.
For the first time, in a long time I had the chance to build a PDF template today to help out a colleague. I spotted the property and thought, hey, lets give it a whirl and see in Publisher supports it? Low and behold, Publisher handles the comb spacing in its PDF outputs. Exciting eh? OK, maybe not that exciting but I was very pleasantly surprise to see it working.
I am reliably informed, by Leslie, BIP Evangelist and Tech Writer that, this feature was introduced from version 10.1.3.4.2 onwards.
Official docs and no mention of comb overs here.