I'm a Donaire fan as well Roe, and I hope your right. In the past, Nonito has always turned up in style for his biggest fights, so that may well be the same again. But he was caught with alarming regularity on Saturday, and he can't afford to do that against Nishioka who has a great straight left. If he leaps in with that left hook, the Jap will find him.
On his day, and at his sizzling best, he beats every SBW on the planet, Rigo included IMO. And he is still rightly considered one of the best fighters on the planet.
I probably didn't give enough credit to Mathebula. He is a talk ranging boxer with good defence and a fine jab, so perhaps his style negated Donaire somewhat.