It's always nice to look into a thread and see everyone posting sensible responses, rather than "Rios destroys Ortiz."
Let's face it, Ortiz clearly has more talent than Rios. Rios doesn't box at all. Victor has power, accuracy, reasonably good defense, physical strength and good boxing skills. He's also a southpaw.
Rios has... a great chin? Thudding, consistent power (possibly overrated). No boxing skills whatsoever.
And like everyone else is saying, it's definitely up to whether or not Ortiz loses it mid-rounds and either starts hugging Rios or trying to order a big mac and small fries from the ref.
Ortiz via KO.