You could go either way for the Genesect boost. I just thought it was quite a cool set overall. I think he could have used Thunder since it is a rain team, and substitute is great, though HP Fire for Grass types that resist both STABs, or even HP Grass for the rare Storm Drain Gastrodon.
It's not perfect, but it is surprising an underrated, which is what this thread is about right?
One of the cooler parts I thought was subsplit working better and better as the match progressed, nearly destroying reuniclus outright.