Ah, we are back at the "does staccato and legato sound different if sustain pedal has been held down" discussion again. I kind of want to let it rest, thinking this might be side tracking the original topic. But if we are going to continue, I did find more information that could bring more insight.
Here is a research paper published in Porceedings of the International Symposium on Musical Acoustics titled "Once again: The perception of piano touch and tone. Can touch audibly change piano sound independently of intensity?".
You can read the conclusion yourself. My takeaway is when the intensity (i.e. dynamics, velocity, or volume) is fixed, the study subjects were only able to discern different touch because of finger-key noise. When finger-key noise is not heard, then there is no tonal difference between different touch.
This is interesting because it can mean everybody is right. @twocats is hearing clear difference between staccato and legato as she plays them on her piano. @MRC, @pianoloverus, and I are also not hearing the difference from the recording (which most likely did not capture finger-key noise).
Then, this leads to a more relevant question: as an pianist, you are trying to make an effect and convey it to your audience, but can the audience hear what you hear, or perceive what you perceive? For audience who is going to listen to your performance on recording, what is going to get lost? For live audience, does the one sit in the back hear less than those in the front row? Can visual change audience perception - for example even no finger-key noise reach them to hint the touch, maybe seeing the pianist's finger movement do impart richer perception of the tone?