Default Forget the SD805 why didn't they use the IMX214?

There has been a lot of debate about why LG used the Snapdragon 801 instead of the 805 and initial test prove only a marginal difference for power users, especially the SOC. The GPU on the other hand is more futureproof.
What I want to know is why LG went with last years Sony IMX135 camera sensor instead of the new IMX214 that the OPPO Find 7 and Oneplus One use? Sure we have OIS and laser focus but the improvements the 214 bring are significant enough that average people will notice. Like Reatime HDR in video and less colour crosstalk and the fact that it is slimmer. How much more expensive would it have been to put them in considering that the OF7 and OPO are older devices?
Here is an article about the Mi4 and its sensor
N1 to SGS2 to SGN to HOX T3 to G1 Dev ed. grey Lumia 920 to yellow 920 back to N1 then a Sony Xperia Z via a Mozart and now a black and a silver M7 and now a Nexus 4 and a HD2 running WP7.8 and then a Note 3 back to a silver 64gb HTC One M7 and now HTC One M8 and now a Sony Xperia Z2 back to a 32gb M8 and now a G watch with an LG G3.