I did leave a comment on the blog, asking if Pyjaco is "py2js (version 3)", because that's not really a fair description :-)
I asked myself the same question.
(Also, it seems like a little bit of a cheap shot to introduce his own
"best" solution right at the end, but that's just my opinion..)
Yes, here and there the article lacks objectivity and he could do a better recherché about pyjaco,
but its just a blog, not NY-Times article :-D
May be if the 3rd py2js version is indeed pyjaco, he can make it clear, correct the wrong issues and link to the pyjaco site.
He also recommends to join forces:
"Additionally, if this project joins forces with the new Pyjamas, I believe both projects will benefit a lot." ,
but then he goes his own way. Leading us to 4 frameworks, which we already had some years ago.
Which one is the "best" we will see in the future.