[Matrixbeast]

The Horoscopes and Zodiarts are far, far superior. The Zodiarts were motivated by their own reasons, sometimes even just reasons corrupted into more sinister actions. They didn't exist solely to do the bidding of the Horoscopes. Watching them you learned of their character, why they're doing what they're doing.

With the Phantoms, they have a personality (Sometimes), but it's nonexistent and they're essentially set pieces for fights so that the series can have an action sequence. There is no depth or wonder, no goals or ambitions. The Phantoms can essentially be treated as drones to the queen bee hierarchy of Phoenix, Medusa, and Wiseman, with only one Phantom even having an ambition beyond obeying the masters (Cait Sith's wish to just sleep all day).