The sounds in either track aren't very complicated - the lead in the Shlohmo track is a pretty basic saw with a LFO detuning the pitch constantly; the glitches can be just played by hand but it's a bit hard to tell. Joker's synth swooshes are a bit harder to pull apart exactly, but suffice to say the metallic spring reverb splash does a lot of the sound there; the base sound isn't terribly complex, mostly just a quick filter sweep. And then it sounds like he's resampling his own synths and then playing around with their pitch, among other things. In other words, the sounds and the techniques used in these aren't terribly complex or technical by themselves, but work great in the given context - Ableton's Operator & Analog are well capable of producing all of these, it's more just the matter of getting to grips with the controls. Read up on some synthesis basics if you already haven't and continue playing around until you get comfortable with what the knobs and buttons do - there's no magic trick to this, it's just about experience.
