Good grief, bloody hell. Rubinstein's octaves over Argerich? What are you smoking? There is a lot I admire about Rubinstein -and those treacherous octaves in the Chopin F minor Fantasy are well addressed- but in general Rubinstein's octaves are the Toyota Camry compared to Argerich's BMW 3 series.
Watch this interesting interview with Sir Charles Groves. There is some great footage of Argerich's octaves (they are really awesome), also her priceless English: 'I am not afraid of speed on the contrary, on the contrary that is my problem.'
Poor old Charles, waiting for the camera to stop rolling. Standing there wondering if he's gonna find out if her reputation is just reputation.
"And if we look at the works of J.S. Bach — a benevolent god to which all musicians should offer a prayer to defend themselves against mediocrity... -Debussy
"It's ok if you disagree with me. I can't force you to be right."