Im going with RUTHLESS on this one. Im a huge fan of all things MFS since '02. But the big factor here is how will Robbie's power look now that hes back at 170? I mean, he was getting outwrestled by bigger MWs. I think he can hold Kos off. And if Matt Hughes (who I <3) can out strike Kos for 4:57 then Robbie will KO him in that time period.