I don't see why. That one is almost a year old and it's closed.
Iris has an OP Dragonite and a tough Excadrill, May's Blaziken is pretty great, from Dawn's side she has Mamoswine but nothing else really wowed me, her Piplup was admirable. I honestly think it's the best of her team, better than Mamoswine, it seems like most view Mamoswine as the strongest because it was large and big but Piplup seemed much better imo.Defo Iris IMO, powerful pokemon and battled alot. Dawn is prolly second place, with Clemont/Cilan/Misty as the third.
Not sure about May, sure her team is mostly fully evolved, but only really Blaziken came across as all that powerful.