User blog comment:Miskos3/Fairy Tail 521: The Strongest Wizard, Review/@comment-5894890-20170212010455/@comment-1153699-20170213101344

@Wrath, this is Hiro we're talking about though. Does he really remember such a detail from so far back in the story? And even if he does, the Tenrou tree was never portrayed to be a complete game changer. Which is what it would be if the tree really is the reason for FT's sudden major boost. There's also no mention of the tree being a factor in FT's recent fights or anywhere in the current arc iirc.

Wendy went from not being able to even scratch GS Dimaria to damaging Human Irene without much effort. Erza went from being toyed around with by a nerfed Azir to giving trouble on her own to Human Irene and destroying a meteor from Dragon Irene while most of her bones are broken and now this BS with Elfman and Lisanna. And still, Azir had them on the ropes last time we saw them.

The tree is no longer connected to Fiore and we all know August is still gonna get solo'd by (an injured) Gildarts. Or at the very least have trouble handling him. Which shouldn't happen since, again, the guy was portrayed to be on Serena's level (and the tree was still connected to Fiore then) which is far below August's level.