[DeuceKicker]

You really don't see how the presence of his buddy changes things? Do you really think he'd bet with a hand he was 99% sure was a loser if his buddy wasn't between him and MP2?

Let's say "Dave" is OP's arch-rival. They've played together enough to know each other's styles very well. The only difference is that OP and Dave cannot stand each other. Does OP bet this river, almost certain that Dave will raise to knock out MP2--but also pretty darn sure that OP's hand < Dave's hand < MP2's hand?