Zander

I'm not talking about either, yet all of them. You meant a specific situation in the battle that, when the opponent's mons are low and the fairies are gone, will insue in Garchomp being really strong. However, that is much easier said than done. Fairies can be really hard to deal with depending on the one you're dealing with, the opponent will most likely have a strong ice type that can also deal with the chomp because ice type moves are extremely useful, and there are still more options to deal with the land shark. I'm not saying it's a weak mon, but the situation you set up here is meant for Garchomp to do as well as he can and will rarely, if ever, really come to fruition in a battle

That's also implying -all- fairies counter Garchomp too, and not just a few which is more accurate. That being said, the rest of what Wolfox stated is pretty accurate.

hence why I said that depending on the fairie(s) you're facing they can be hard to deal with. a Mimikyu, Tapu or Mega Diancie can push shit in with ease while a Slurpuff or Aromatisse is not as hard to deal with