The Hamelin comment is not laughable - here's why...
Among other things, Hamelin slopped up the Chopin Barcarolle live...could you imagine Cziffra playing a sloppy Chopin Barcarolle? Or Kissin? Or Berman? Or Volodos? I'm not saying he doesn't have really good technique, but the greatest EVER wouldn't be sloppy playing a Chopin Barcarolle live, period - and it wasn't because he was taking risks, or because of a memory slip, just innacurate fingers....
About Godowsky Etudes, they are truly physically difficult, and mentally tough, and memorizing them certainly takes longer than most pieces, but not difficult to execute cleanly once you've taken the time to master them and they are in your fingers. Certain pieces by Liszt, however, are more difficult, no matter how much time you spend on them - Feux Follets and Don Juan, for example, or the HR#6 or Erlking transcription - these are true tests, yardsticks or pure technique...BTW have you heard Kissin's live Feux Follets or Erlking?
In time, as more pianists venture into playing the Godowsky Etudes, this comment will prove itself to be true...I give Hamelin great credit, though, for having the courage to tackle that repertoire more comprehensively and masterfully than anyone else up till now, and with truly great technique and beauty...I just don't put him in the top 5, or even 10, until he performs LIVE the pieces against which all techniques throughout history have been measured - the Liszt ones mentioned above, the trickier Chopin Etudes, etc. Only then can we truly compare, right?
From what I have heard from Lisitsa, she is amazingly fast, clean, and has great variety of touches - yes I would include her...no, I don't laugh at her technique...
OK - sorry for the long post - I'll stop now! : )