As far as I'm concerned, how about using this Virizion set? It doesn't have Hidden Power:
-Work Up
-Close Combat
-Giga Drain
-Stone Edge
Nature: Hasty/Naive
EVs: 252 Atk/4 SAtk/252 Spe
Item: Life Orb
That's a good argument, but I still think Ditto should've won because of its DW ability.