>>11841163He's weak to some of the most prominent threats in the OU metagame, such as Water, Earth, and mostly Fighting attacks, which makes it easy to switch in on him. Rock is an overall useful STAB, except for the fact they're prone to missing. Dark is useful for Reuniclus, and maybe the L@tis, but that's about it. Speed wise he's poor, which is never good for a mon who is meant to be an attacker, but can't take hits well himself. His role as an attacker has been dethroned by the power-creep of guys like Terrakion and TechniLoom. He's just not so useful anymore, suffering a lite version of Electivire syndrome, in that while he's a good Pokemon overall, he's stuck being used in a metagame which hard counters him completely.
Meanwhile, Hippowdown is capable of taking a variety of physical hits, which is extremely important as not only a wall but as a weather-starter, and can easily shuffle teams, set up hazards, or use EQ in tight spots.
