A lot of it boils down to how impactful and how much of an auto-include it is
However, they also have the most bizarrely skewed view of reality, seemingly as a consequence of opening so many packs
Coupled with fast-paced matches, where players use their most powerful Pokmon cards in battle, the gacha elements make Pocket undeniably sticky
Similarly, energy cards will have their name and type symbol printed along the top-left so that they can be read when tucked behind the attached Pokmon
A GW hatebears deck actually won the most recent Bazaar of Moxen Modern event (307 players), and this would fit perfectly into a deck like that
Also, if you don't happen to have another gate to get bit already have 10 in play, then you get to win as well