Nevarez seemed to be content with not getting knocked out. It takes two to tango, and Donaire was giving him openings, in trying to get Nevarez to open up, but he was just hiding behind his guard and not throwing any punches.
Sure, he showed some good defensive skills, but anyone can block punches all night long. Nevarez averaged something like 24 punches per round, and really didn't look like he was trying to win at all.