>>35919893Flying types are immune to Arena Trap. Dugtrio has a barely useable Attack stat and an unusable Special Attack stat (unlike Landorus, who gets 300 Attack with 0 EVs and 300 Sp Atk at 252 EVs) and also horrible defenses and almost no HP.
>b-but Focus SashFocus Sash doesn't matter in a metagame where Stealth Rock, Spikes and Toxic Spikes are a thing.
As for counterplays, OU is full of mons that either are immune to EQ, or can withstand several of Dugtrio's Earthquakes. Not even Chansey, Ferrothorn or Toxapex die from it, and even Heatran has an Air Balloon half of the time; but quite frankly, it would be nice if they did . They need more counters.
As for Landorus, you either gotta have a sneak Ice-type move on the 'mon that's facing it or change to another 'mon. Which doesn't matter because Landorus can either U-Turn or be changed next turn. Rubbish.