Sales prediction Destiny ( bit less then 35 million )

[BHR-3]

kirby007 said:

First week WW PS4/XO combined just below 5 million with the PS4 version topping 3 million
LTD PS4/XO sales will end up just below 20 million
All other versions will bring it just south of 35 million ( gonna be mostly on PC )

first week could happen but i see LT for ps4xb1at around 15-18M and a LT for all around 25-30M its kinda hard to predict this game b/c we dont know the future.  how long will there be support for destiny before sequels prequels release?