Hi John,
The important part to bear in mind that the INI file doesn't directly contain UA strings, so they can't be directly compared to a real UA - they are "match" strings which can be used however you wish; most commonly turned into a regex.
Finally, this might sound odd coming from a project maintainer, but you should also consider whether UA parsing is the correct course of action. Responsive web design and browser-agnostic websites means that UA parsing is a dying art (and that's a good thing, it's largely inaccurate). Browser statistics (in general) are becoming less and less meaningful (unless you're a browser vendor watching your market share of course!). There are, of course, some cases where UA sniffing is still a necessity, but do consider other options first ;)
Hope that helps!
Thanks
James