Oh it is defenitely (end of the song is so amazing, like last 14 seconds, just the beat and one of them just going "blawh! Blawh! blawh!" ), its so perfectly on point with every classical music sampling in their beat productions (ridicolously skilled germans), and just work with raw underground rappers like AOTP and such only, excellent combination.
Listen to their latest album Snowgoons dynasty from last year, arguably even better then Black snow which Curse is from. From black snow, title track, and this one are arguably as good as the curse (IMO, prolly Hatred is better):
If you havent heard about them (its understandable, they are underground), then you are lucky, I suggest you look up pretty much everything by Army Of The Pharoahs (the two guys Apathy&Celp titled that have duo name Demigodz, are members of AOTP), they go hard at all times, legit mofos, and its music thats very appropiate for the gym