Wim did not do any measurements, he copied some graphs from a post by Mansr from 2017 and made his own comments about them. It might have helped all the discussions, if he had included a link to the post he took the graphics from.
I have linked the originating post for you; it comes from a 2017 thread in Audiophile Style, aka formerly Computer Audiophile. MQA spectrum plots - General Forum - Audiophile Style
And, yes, they are different, not the first of which is that Mansr is running code outside of an actual MQA device and is certainly NOT using Roon. Please reference the original post if you want to understand what Mansr was saying.