It can be both, you know. Though Kpop is inspired by the Tehcnopop wave that hit America, so can we say Kpop and this song are American inspired? WHICH is technically inspired by the Techno wave that was really big in Europe (and more underground here in the states), so can we say all of that is European inspired?
It's not wrong to say it's Dubstep inspired.
It's not wrong to say it's Kpop inspired.
Inspiration isn't wrong.