.doc a best product. Sorry no way. Word to this day cannot produce anything near as good as Tex. I daily watch long email threads of collaborators struggling to share .doc files written with different versions of Word on different platforms.
TeX may have had superior output, but its input methods have always sucked. At the period of time when word came to dominate there were no wysiwyg TeX tools and it was a real pain to include figures and images. Output formatting mattered if you were submitting a conference paper, but the other 99.999% of the population cared more about being able to get simple tasks done easily.
perhaps, one builds up a set of neat macros and using emacs it's quite workable. For mathematics, Word still can't touch it. Word is also all about constantly needing the next $500 version. It's not clear also that they ever got this wysiwyg thing correct. It seems to change the fonts all the time in arbitrary ways. Sorry, I'd rather memorize a bunch of tags and use emacs.
I think he meant Word was the best product. There are, of course, very many different reasons why one might use the word "best", but I would say that there are definitely many reasons why one would call .doc the best format.
