I just heard K.311 and it was gruesome: ugly, jerky, poundy, and lacking flow and rhythmic forward motion. Quite the opposite of everything we read about Mozart's playing. The second movement was especially unlovely, and it's one of more lyrical things in Mozart keyboard music, which of course is saying a lot. It might be interesting to hear Lubimov's defense of his crude and awkward phrasing (nonphrasing) and his sense of what the score is asking for, but actually, on the basis of K.311, I never want to hear the guy play again. Not Mozart, anyway.