If they have a real product they should brand it separately. If they’re just trying to sell more snake oil to big corporate fools, then they’re probably on target.
Watson (the quiz winner) was in 2011 before the deep learning revolution (which kicked off in 2014 with AlexNet for image recognition). It was probably the pinnacle of old-style natural language processing.
The success of that led to a set of basically unrelated tools being released under the IBM Watson brand which were mostly failures.
Whose to say which is more important.
The problem is that most of the AI/ML technologies IBM used were stock, off the shelf, often not even state of the art. You could literally go to a github page or use scikit_learn out of the box to get equivalent or better performing models without being tied to IBM's proprietary, consultant heavy, solutions.
The marketing of Watson, tied to the Jeopardy performance, made people think it was the first coming of AGI -- a kind of Skynet moment. It was really just a cobbled together basket of unintegrated, nothing special, industry bog standard AI/ML stuff.
"Watson" is ultimately a marketing name for a sub-par IT consulting service, nothing more.