Lore wise, the one in the actual mod makes more sense. It uses the amazing funk of gumball chromatic, which is supposed to be cannon to the actual gumball show, and pibby apocalypse is supposed to be cannon to the actual cartoon characters.
This song is so underrated, and has such an amazing beat and the vocals of finn and pibby here are extraordinary- this song definitely deserves nore attention.
One really sad detail i noticed about this song specifically while i was playing was that everything relating to how good you do playing it isnt there. Like your score, that bar, your accuracy, its gone. Almost like it never mattered here specifically. To me it just shows that Darwin just wants his bro back. Really cool small detail.