I'm picking the underdog. I noticed that Donaire gets bored too easily in the ring and he gets hit too much. He's got nice power and speed. He is taller and fresher legs. However as I said earlier he just gets hit too much and his punch output has decreased.

A technician vs a boxer who loves to knock out generally leads to the technician winning by dismantling the opponent.

However Nishioka is older, much older.