I think there's more value on Sonnen than people think. There have been very few fighters that realize that the only way to beat Silva is to close the distance at every turn AND that still have the skill to dominate him inside. Silva's impressive victories have come on people that think it's a good idea to slug with him, or inferior ground fighters. Sonnen not being on PEDs anymore gives Silva a slight edge, but there's value in betting Sonnen.