>>17347216so? Aggron,tyranitar, weavile, aurorus and many others have 4x fighting weakness. aurorus also has 4x to steel and aggron 4x to ground and that doesnt stop them. In fact, aggron takes a strong fighting and ground moves just fine.
252+ Atk Landorus Earthquake vs. 252 HP / 252+ Def Aggron: 328-388 (95.3 - 112.7%) -- 68.8% chance to OHKO