Vera has no shot at the title if he took a shot right now. Guillotining assuerio silva is one thing, but having a 6'2" submission fighter step into the ring with Tim Sylvia is a bad idea (unless of course its a psychopathic Belarussian). This is assuming that Vera wants a shot at the Heavyweight title.
If he drops down to LHs then he'll have to fight the Iceman, who will also keep him standing up and land 1 punch and the fight will be over. Vera needs to prove himself as a standup fighter before he starts thinking about a title shot, whether its Sylvia, Arlovski or Liddell. Jiu-jitsu without substantial takedowns will just get you killed.