More or less, here are the Etudes in order of increasing difficulty (for my hands):
-Op. 25, No. 9 in G-flat Major, "Butterfly"
-Op. 10, No. 9 in F minor
-Op. 10, No. 3 in E Major
-Op. 10, No. 5 in G-flat Major, "Black-Key"
-Op. 25, No. 1 in A-flat Major, "Aeolian"
-Op. 10, No. 12 in C minor, "Revolutionary"
-Op. 10, No. 1 in C Major
-Op. 25, No. 7 in C-sharp minor
-Op. 25, No. 12 in C minor, "Ocean"
-Op. 10, No. 4 in C-sharp minor
The more I look at this list, the more strange it seems to me. And I know that 88man was speaking of his hands specifically, but it still seems strange. This is roughly how I would order them, from easiest to most difficult, for my hands (leaving out a few I have not played enough to judge):
10/6 - E-flat minor
25/7 - C-sharp minor (cello)
10/5 - G-flat major (black keys)
25/9 - G-flat major (butterfly)
10/3 - E major
25/10 - B minor (octaves)
10/12 - C minor (revolutionary)
10/7 - C major (repeated notes)
10/9 - F minor (wide left hand!)
10/8 - F major (LH melody, RH runs)
25/1 - A-flat major (aeolian harp)
10/1 - C major (RH arpeggios)
25/6 - G-sharp minor (thirds)
10/2 - A minor (chromatic)
25/11 - A minor (winter wind)
25/12 - C minor (ocean)
25/4 - A minor (LH jumps from hell)
10/4 - C-sharp minor
10/11 - E-flat major (ROLLS! BIG, KEYBOARD-SPANNING ROLLS IN BOTH HANDS.)
I left out 10/10, 25/2, 25/3, 25/8, and 25/5.
(Edited because I realized I mixed up 10/4 and 25/4 - also I moved 10/2 and 25/6 up the list since I haven't gotten either to performance tempo and others think they are very difficult.)