I have a number of live recordings of 25/12 and heard live performances. I have noticed that pianists tend to mess this one up -- strangely more so than 25/11. Just lots of wrong notes.
Maybe it's just tiredness, fatigue: After all, one gets there after making it through 25/10 and 25/11. But then, if it was an easy etude, no messup should happen. Besides, and as always, it is crucial to distinguish between playing the etude for pleasure or performing it as the final pièce de résistance of the set. If you mess up an earlier etude, the public might forget; but if you play the last one badly, it will be remembered. And the performer knows it.