This is not to say that Ferrothorn usage won't keep Chesnaught down, quite the opposite. However, Chesty's unique in that he's able to accomplish specific tasks, and check specific threats.
I'll admit, Ferro's one of my favorite spikers. Often, I'd just throw him in when I need a wall and call it a day. No pre planning or anything, just "huh, I think I should have something tanky here...@#$% it, Ferrothorn" and he'd rarely disappoint.
However, if you need something to set up Spike, but you reeaaally want the other team to not have Tyranitar on the field, use Chesnaught. If you need a spiker, but you don't want to set aside another team slot for a phazer, use Chesnaught. If you need a Spiker, but Excadrill is the one Spinner that none of your other pokemon can handle, use Chesnaught. You you need a Spiker, but @#$% Gengar, use Chesnaught. If you don't like the taste of mushrooms...
Well, you get my point. I'd imagine him having a set dedicated to OU on Smogon's X/Y pokemon analysis. He'll be UU, perhaps. but have that one OU utility.
I'll admit, Ferro's one of my favorite spikers. Often, I'd just throw him in when I need a wall and call it a day. No pre planning or anything, just "huh, I think I should have something tanky here...@#$% it, Ferrothorn" and he'd rarely disappoint.
However, if you need something to set up Spike, but you reeaaally want the other team to not have Tyranitar on the field, use Chesnaught. If you need a spiker, but you don't want to set aside another team slot for a phazer, use Chesnaught. If you need a Spiker, but Excadrill is the one Spinner that none of your other pokemon can handle, use Chesnaught. You you need a Spiker, but @#$% Gengar, use Chesnaught. If you don't like the taste of mushrooms...
Well, you get my point. I'd imagine him having a set dedicated to OU on Smogon's X/Y pokemon analysis. He'll be UU, perhaps. but have that one OU utility.