How about Liszt playing Chopin's Op. 25 No. 2 Etude in octaves as a response? Can you hear how FAST Cziffra plays it? Those are nowhere close to even 160.
And what is your argument? Please take a look at the tempo indicated by Chopin. It's six notes on the beat, the beat being 112, but Cziffra doesn't even play that fast. Besides, the tempo Cziffra takes is divided over on average 3-4 fingers. Let's say he plays 12 notes a second, then each finger has a load of 3 to 4 movements per second which is well within the limits imposed by nature; not really that fast per finger. But when you play in octaves, the playing unit is either the wrist or the arm alone, which just CANNOT move at such a speed.
P.S.: There are no accounts of Liszt playing that etude up to the speed Cziffra takes. Here is what is says:
At his next Viennese concert, Liszt purled through Chopin's Etude in F minor, Op 25 No 2. After the rapturous applause, he repeated the first bar slowly and tentatively - in octaves. Then again, a little faster. THEN HE REALLY SPED UP and whisked the entire etude into an octave soufflé. Liszt remained King in Vienna[...]
What does the phrase "Then he really sped up" mean? For me it means: then he took it to the limit of humanly possible octave playing, not necessarily to the tempo Cziffra takes with his fingers. If some musicologists mistakenly read from the quote "Liszt played op 25 no 2 a tempo in octaves" and published that as "the truth", then that's their problem.
Paul