Just because everyone plays a deck doesn’t mean it’s the best (Kingdra). Kingdra against any good Eeveelutions or Torterra list will get wrecked. AMU doesn’t really have bad match-ups, but isn’t BDIF either. The same goes for Leafeon, Torterra and Frolass (To some extent).
As for my pick of BDIF this format (DP-LA). I’d go for Eeveelutions, I’m biased towards it. But I think Empoleon, Torterra, Froslass and AMU all deserve the spot as well
As for my pick of BDIF this format (DP-LA). I’d go for Eeveelutions, I’m biased towards it. But I think Empoleon, Torterra, Froslass and AMU all deserve the spot as well