Why does everyone assume a "focused" Silva beats Weidman? Didn't Weidman take him down within 30 seconds? If he hadn't gone for the knee bar he would have held Silva down for the entire first round and beat him up with GnP. Wiedman was clearly winning that fight up until the KO. And I honestly think Silva was focused, he just got beat by a better fighter.
In the end Weidman has more ways to beat Silva then Silva has to beat him. Silva really can only win this fight if he can keep it standing and KO Weidman. Weidman has shown he can KO Silva, take Silva down and GnP him and might even be able to submit him. For the first time in a really long time Silva is fighting a guy with more tools in the tool box.