enjoy :) yes I know that I uploaded this before but I think it would be suitable if I put up a better version of it copyright double dragon - technos japan pc engine version - naxat soft
PC engine version is more of a port of the nes game instead of the arcade which is a good thing because the arcade didn't have this guy as the final boss it just had the shadow clone while the nes had a cooler final boss while still having the arcade final boss also having an actual ending insted of a photo.
I prefer the NES version of this song, the orchestra hits etc. make this sound like a late 80s/90s morning or talk show theme or something. Loses the edge.
It's kinda late to answer but here it goes: Arcade version, as you said wasn't released on any nintendo console. All the games are ports, the more accurate to the arcade version was the Sega genesis version. Besides that, Nintendo doesn't have the rights to Double Dragon or any other Technos japan game. Million Corp has them. Million was founded by former Technos japan employees and bought the rights to TJ games.