SkyLiNe only plays jump maps, and is really good at them obviously. Shk only ever did jumps on maps matchmaps and pubmaps, and again is really good at them. Spook/Darkness have not actively played in years. So you can't really compare any of them.
They are all good jumpers, just like many others in the community, but better is a matter of opinion which in this community will often turn into a flame fest.