Maidana is a true 140lbs that could easily move up to 147lbs and still be strong and powerful. Rios on the other hand can easily fight at 140lbs but his conditioning ain't really top notch. I love both fighters, both bangers and come forward fighters that look for a KO. I would have to give Maidana the edge for this fight though, as much as I like Rios and want him to be succeed.
rios is a toughguy
maidana is a natural born killer
rios cant fight backwards
and maidana would litterally knock him backwards
chino would take his soul
he'd never fight again