I must ask. Why isn't ferrothorn S-Rank? It can literally demolish most teams with leech seed, spikes and SR. Access to two powerful moves give it much offensive presence and allows it to use a CB set. Only tentacruel and forretress can spin against him because the best rapid spinner loses to him. Also, forretress should also be A-Rank. While it faces major competition with ferrothorn, access to T-Spikes, Rapid spin and V-switch give it better utility. It can get up at least one layer of spikes thanks to sturdy and maybe two because I'm not sure if the custab berry is released.