Also, my Jellicent has a spread of 252 HP / 216 Def / 44 Speed. Mine had 403 HP, 230 def, and 246 Sp. Def. Funny thing is that you wouldn't have had to deal with it if you didn't say "no legends". I was going to try out my new Cobalion in its place. (▰˘◡˘▰)
Such a spread would result in Ferrothorn having 144 sp. atk. My Flygon has 195 sp. def. That would only result in Energy Ball doing 66-77 damage. That Energy Ball from your Ferrothorn dealt 109 Damage. No critical hit. This would only be possible if that Ferrothorn had a sp. atk stat of at least 205. Only possible if that Ferrothorn also had EVs invested in Sp. Atk as well. I can only conclude that this Ferrothorn had more EVs than it was supposed to since you claim it only has investments in def and sp. def.
Also, Nintendo Wi-fi Connection wouldn't accept our battle video. Explain.