A lot of champions were in the WEC when that place folded and NONE of those guys got immediate title shots or were ever billed as champion vs champion. The only reason Henderson got that treatment was because at one point Pride was a legitimate contender. WEC and Strikeforce were never threats to the UFC.
But if there is a precedent to fall back on it is this: If you were a champion in an organization that Zuffa purchased and immediatley folded you might get a titleshot right away. If you were a champion of a non-UFC organization that Zuffa owned and ran for some period of time you will not get a titleshot.
That said, I'm on record as saying I could care less at this point whether Anderson fights Cung Le, Rockhold or Weidman. Just get that coward of a champion into the octagon to defend his belt more than once a year.
Hating on Anderson Silva before it was the cool thing to do.
The idea of a "true number one contender" is the stupidiest MMA idea to be perpetuated by fans and media, EVER.