Where they rank has no bearing on what will happen.
Should be a good fight. Okami's grappling may be the difference. But it isn't like Okami has been a world beater. He has been solid.
I think Belcher can rock him on the feet and would win that striking battle. On the other hand I think Okami can put him on his back. Will depend on which guy imposes what they do better. Belcher hits hard that is for sure. Okami is a pretty smart fighter though and will grapple.