Silva is a no brainer here. The real questions we should ask is when will he dispatch Okami, how will he do it, and will Okami be conscious at the end of the night.
A finish is the most likely outcome here in a 5 round fight and there's two ways to finish a fight, by KO (most likely) or submission. There's a possibility silva stuns okami and submits him like he did to dan henderson.