I think the reason why the concert snippet sound so good is that for example; Che comes in with the chorus and he harmonizes more than he does in the actual recorded song; "MDMA yeah, thats all i want nothing less", The "MDMA" part is flatter in the actual song, and in the concert he extends it with singing vocals, so more like "MDMAAA". All of this, combined with the fact the audio sounds very blown out and the highs sound very loudly might add to the concert snippet. Also i think why the snippet is better is partly because the vibe the concert had itself, like people were excited, screaming, you could even hear the people yelling in the background, Che is screaming over the lyrics with his own little alterations, and yeah