I agree with the thrust of your article, but I've got one small correction:
> Support for Nuance’s Vocalizer Expressive 2.2 synthesizer, adding voices and new language support
NVDA does not, in fact, have this. The latest version of vocalizer offered by the two competing NVDA addons is 1.1, as far as I can tell. If you compare the voice and language lists, JAWS now has 2 English voices that neither NVDA addon has, and I think 1 or 2 new languages. However, I don't know of any reason why the NVDA addons couldn't be upgraded; it's probably just a matter of time. Also, according to an audio recording posted to Twitter, the vocalizer support in jaws is
$1.