I think the report is well-balanced, if slanted towards the person who is more intimately familiar with the Technics instruments. In most cases, the comparison describes the different implementations of a function on the two keyboards, unless there is no corresponding function and you can only write about an instrument which does have it.
Though I don't currently own either KN6000 or PSR9000, I also agree with the implied conclusion of the report: the Yamaha offers many more features than the Technics, and for much less money. Of course, the way an instrument sounds is a subjective criteria, but I don't feel that either one has a big advantage there.
Regards
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Regards,
Alex