The fact that nuova was four star dragon makes it even more emotional at least for Goku and his lore that four star dragon ball holds history and meaning and memories for Goku till this day and the fact that four star dragon was someone that was able to share a bond of friendship with Goku just like Vegeta and gain goku's respect and save him so many times just that is so heartwarming at least for og dragon ball fans who know the importance of four star dragon ball for goku
since syn shenron was made from the wish of reviving all of frieza's victims, it used the most energy thus making him the most powerful of the shadow dragons
nuova facts(maybe): think because it was from the 4 start dragonball (the one that goku cherishes) it has some of goku's qualities. plus being born from the only evil wish he had less negative energy than the other dragons which made him less evil
Jojos: Kills all the animals they encounter in the show. The writer: Let's add a dog as one of the side characters! Readers and viewers knowing what that means: 😮😭😵
One thing that always confused me, Roshi thinks the kikoho's destroying the stage and making a a hole in the ground was so much more impressive than his kamehameha, but he destroyed the moon with the latter, which is like saying the average ant is bigger than the 300-meter tall Godzilla Earth.