Mercury’s in anime and manga, Jupiter’s in PGSM.
Somehow the cliche "See, she’s the genius/psychic/suspicious/famous girl! Let’s gossip about her so that both the main character and the reader can get to know her in a "casual" way", that started to be even more predictable in the next chapters, worked in favor of the story. There was a slight possibility of the "cold genius" being an enemy.
Mars’ "haunted bus" story is… silly, even compared to other manga chapters/anime fillers. Maybe I’d accept it as Jupiter’s introduction, but the elegant [manga] Rei deserved something better.
Jupiter’s introduction both in anime and manga felt like Naoko and anime writers respectively just had to awaken her somehow and come back to the previous plot as soon as possible.
The introduction of Venus was well written, but the later sudden change in Minako’s character ruined this in the anime. Also, in both versions, Sailor V(enus) suddenly stopping her superhero activities after joining the team makes me question the "ally of justice" part