Ahh, now I get it. You meant the type dissadvantage.. I had a great ground dissanvantage earlier Earthquake pwns. Took out my two fave pokemon when they were in 2x2 battles in one shot. Houndoom and Luxray xD If my pokemon weren't faster that is, ehehe..
Tyranitar, Weavile, Heatran... yeah real big fighting weakness there... aha. So I'm EV training up an Espeon in order to counter that. Gonna have a Battle Tower team consisting of Weavile, Garchomp and Espeon.
If you have any of:
Squirtle, Bulbasaur, Growlithe, Staryu, Chikorita, Cyndaquil, Totodile, Murkrow, Beldum, Chimchar, Piplup, Burmy, female Combee, Cherubi, Aipom, or Munchlax any one of those is fine.