OK,
Well thanks for your clarification. I mean if they're old posts, i'd disregard them to be honest.
As a major Chopin fan (like many on here are) I agree with you that this and many other Etudes are extremely more difficult then what they perceive to be..
I by no means disagree that accuracy at speed is definitely a skill in it's own right yes, and fair to say comparing a 60bpm to 160bpm is definitely 2 different levels of skill. I also agree that I wouldn't play something at a much lesser speed and consider it complete or agree with any others that claim to do so.
I do however disagree that there is so much difference between 120 and 160 that if you could play at 120 with 100% accuracy, you could then argue you have taken out a bulk of the learning. I mean that's what roughly 70% speed.
Also I don't know any serious pianist that would play something at 70% speed and claim to have completed the piece, especially an Etude.
Lastly, may I ask can you play this piece? It would be fair to say unless you can 100% play this and every other Chopin Etude it may be a little hasty of you to comment on its difficulty vs other Etudes and also worth noting that what you may find difficult in one piece, may not be experienced by another pianist for a number of reasons.
Again I have not seen anybody claiming this Etude to be easy. I would like to see your performance if you can play, I very much enjoy seeing other pianists perform these Etudes.
Sorry for coming off ranty but this piece means a great deal to me and I've seen a lot of people disregard it and you obviously saw this without knowing where I was coming from which I understand so sorry for the mood. As for the part you disagree on, I have to say that even 10bpm makes a difference in this piece.
120bpm and 160bpm are worlds apart and I can play this piece up to about 140 bpm and I promise you this, these arpeggios at 160bpm are ridiculously hard. Playing this piece decently at 120 is nothing like playing this at 160, I've put my metronome on downbeats at 160bpm and I just have to laugh, I can't even enter that speed without crashing and I can play it only 20bpm less but there is such difference.
Speed is definitely not just speed when it comes to this etude because the more speed you add to this, the more your technique actually changes, it's almost like a different gravity and it forces a technique that can only be extracted at that sort of speed.
I'm assuming you haven't played this piece but please if you can, put on a metronome for 120, sit at your piano and imagine this piece at the speed required for that tempo, now put it to 160 and do the same. I'm going as far as to say this piece has the fastest double hand arpeggios I've ever heard in any piece, so when people say it's easy or easier just because they can play it in a certain decent manner, it just baffles me because they are not considering the actual monstrosity of a tempo it's actually in.
I would definitely understand what people mean if the piece was supposed to be about 120bpm though, but it just seems like those people have some ego to talk about it like they are on the other end, like they've completed it when they just haven't.