This basically boils down to Jund and Esper looking much less consistent and put together compared to the other two decks, although this might be (at least in part) because it's easier to build a cohesive artifact- or enchantment-themed deck than more abstract themes like "the top of your deck matters" or "lands matter." Here's a quick pros-and-cons list on the four decks
Planeswalkers like Saheeli, Filigree Master and Tezzeret, Betrayer of Flesh require some deck-building finesse, but both are pretty great payoffs for playing artifacts in a format where it isn't always the easiest to remove a planeswalker
Finding a specific card, such as Mew ex would make the chances be closer to one in 154 packs
Thats four extra cards per turn
Zidane's treasure-making effect encourages you to play cards that change controllers, while his ETB, temporarily nicking another creature, pulls you into theft effects
These decks lean into all sorts of ways to cast spells from exile, most notably exiling cards from the top of the library to play later