Well, I don't mean to seem negative or to make light of your concerns.
However, really, who cares? You either can play it or you can't.
I only write this because so many posts seem to sound out forum members on "list the difficulty of these ____ pieces."
Is this a "boy scout merit badge" school of piano playing, where one gets "points" for playing a piece slightly harder than another?
Moreover, there are pieces that SEEM easy, but are often badly played because they demand an interpretive finesse in the performance. When you say "more difficult" do you refer to just hitting all the keys?
As I said, you can either play one of these pieces or you can't. You either want to play it very much, or you don't. Whether it is 0.1333 percent more or less difficult is "macht nicht."
Sorry if I may have offended-- wishing you well.