I thought Nievas was pretty good...
I think too many people just looked at his record, the fact he hadn't fought outside South America etc., and assumed he was ****.
In reality, he was fit, tough and has good power and decent skills. He's certainly a big 168. If you consider Mger Mkrtchian, Calzaghe's 14th defence, had an 18-1 record at the time and had only fought once outside Russia.
With regards to Choc's performance, he would probably be a little disappointed. More attacking and he may have scored a late KO. But it was an average performance, nothing more nothing less.