The problem with trying to represent Venetian Snares with a 30 second sample is that he's too damn versatile - he does make a lot of chilled, almost ambient tracks, and he undoubtedly is influenced by jazz. But listening to the track 'Poor Kakarookee' from his album Songs About My Cats, the only way you could describe it as jazz is if you were in some godforsaken far-flung country where the word 'jazz' means 'ear-breaking techno'. It's definitely not heavy in the same way that metal is heavy, but it's sonically intense nonetheless.
Apologies if I sounded arsey before - I thought you were making some kind of catch-all statement that most 'heavy' music is crap. I see you like Converge, so obviously you weren't.