It seems deathcore is actually "harder" than deathmetal. The big distinction is in that deathcore doesn't sound as "evil" if you will. Deathmetal sounds a little demonic or some shit. But deathcore is pretty brutal and heavy.
I find it harder and harder to distinguish deathcore from deathmetal with alot of these newer bands like Boreworms.
I find it harder and harder to distinguish deathcore from deathmetal with alot of these newer bands like Boreworms.