I'd really like to see Langley win this one. When I think about the long term outcome of this tournament (as far as these two are concerned, anyway) I think that Langley would put up a more entertaining fight against Adeku than Iris would, both with her Pokemon team and their interactions. Iris and her Kairyu haven't had much time to bond at all. The plot with a Pokemon disobeying her as already been done, otherwise I'd say I'd like to see that in this battle.
I really hope they manage to make these episodes better than the Don Battle arcs, at least. More character interactions, yes plz