Have you heard the original song. Truth was a song made for the club. It is heavily edited, and it's vocals use sound effects and editing. So by removing those the song in the first place just feels off but more over, there is no guitar in the song. So why is there an acoustic version of the song. It's an entirely different song. The vocals, the instruments and sound effects are changed to fit an unncessary acoustic version.
The other version is a Justin Bieber song that already has an official acoustic version. the original song has a guitar, uses the same vocals and does not use sound effect on said vocals. An acoustic version here is obvious to hightligt Justin biebers good vocals. By changing singer and adding a choir the original song still lives on with the same guitar notes and vocals.
Do you see what i mean? It's a bit hard to explain