Chopin and Liszt are much better than Alkan. His (Alkan's) music just doesn't sound good.
So don't write Alkan off if you haven't listened to him -
I have several recordings of his compositions.
I myself have not heard enough of Alkan to make a judgement but what I've so far was nothing that really got to me.
You are taking what one composer said about another composer as a reason to not like a piece of music. If you did this for everything, you'd end probably up disliking all the greatest pieces in the repertoire.
Schumann's music is more pedestrian and soulless than Alkan's, IMO.
Liszt isn't in the same league!
Very few composers wrote an abundance of, by most people's accounts, 'great' music and some composers wrote only a few great/good pieces, it just so happens Alkan belongs to the latter category and Schumann to neither.
In my opinion composers like Alkan, Godowsky, Busoni and Medtner especially, have, at their best moments, proven themselves to be at least equal to, if not better than most of the great composers one would normally mention.
+1 for Medtner (just don't make the mistake of comparing the best moment of a 'not so great' composer with the worst moment of a 'great' composer. If best is compared with best it might yield a different picture...
I think (contrary to general opinion) that Schumann was a greater master of variation form than Brahms. These things are somewhat subjective but I think it can hardly be argued that Alkan left us a single example of his even being able to rise above extreme mediocrity as a composer of variations.
Alkan is trite and forced. He had few interesting ideas and seems take the most mechanical and banal sequences of notes and hammer away at them hoping they will turn into music. Often these are transmogrified into pounding octaves with added scales here and there and crashing chords artificially adding to the "difficulty" I believe for difficulty's sake. He is uninspiring and predictable in a childish way. Alkan is to music what doggerel is to poetry.Yes, there are a few good things which I greatly enjoy (the Hamelin performance of whatever it is). But the other night I was trying to listen to the Esquisses (?sp) and they just ramble on like weak soup with nothing whatever catchy or memorable. Try the Allegro Barbaro on You Tube for an interminable aimless machine gunning set of octaves. He wrote a lot of stuff and from the sheer volume one would expect some interesting pieces just by accident. That's the best I can say about him right now.
Then I'm sorry for you.