WP Aegislash can easily run enough bulk to tank an EQ from anything. Even if it isn't carrying a Weakness Policy, Aegislash is just so good and has such a great matchup against so many things (like every Fairy, Cresselia, Metagross, Gengar sometimes, I could go on) that it's practically guaranteed at least one kill in every match you bring it to. Sure, it's scared of Blaziken, Heatran, Landorus and Garchomp but that's pretty much the extent of what it's afraid of. I wouldn't say it's unfair at the same level that Kang, a well-played Salamence, or Blaziken is, but it's a force to be reckoned with and one of my favourite Pokémon this gen.