Islamey is easier, probably because of the repetitions, and it is shorter
ok i just saw the music. its RIDICULOUS!!!!!!!!!!!!!!!!!!! how the hell do you play it?!?!?!? if anyone here has please HELP
That said, I'm not sure you're ready to tackle any of these. Try easier things.
Islamey is a lot less difficult than the Rach sonata no 2, but it's by no means easy. It is hard.