The issue is that by the time the episode aired, that was the common consensus in the OBD: Cty level Zoro defeating Town level Erza. In fact, the calcs used for both of those Destructive Capability stats were taken from OBD blogs It was around the time we had that Hero guy wanking Fairy Tail, and failing to convince most OBDers So, it's not about hating FT, it's more about an episode based on currently outdated information