This is weird (not your post) but how the whole datasheet 'thing' is being presented. From the Apoc. book, I thought GREAT! datasheets.
They are for 'units' or 'formations' (notice how the sheets ACTUALLY are labelled that way...). And VDR was for 'models' because it provided a consistent method for assigning cost (points) to them.
Apparently, based on various comments I have read from reputable sources on different forums, GW considered including the VDR rules in Apoc. Then ultimately decided not to...no good reason given. (*)
But NOW - they are using datasheets to detail new models rather than just converting existing FW models into an offical cross-over format.
How to screw things up again...
(*) My sneaky suspicion is they plan to release updated VDR rules in the future as part of some 'new' launch (either as a suppliment to models or part of something else)...they wanted to save it for that and thought Apoc. had enough already. And the re-release woudl spur model sales...maybe the launch of bundled bitz?
And, in a typical GW fashion, by not including them, folks are now trying to create their own models...and GW is having to poorly respond to that need with what they have at hand - datasheets. Which will then be rendered obsolete once they release the updated VDR rules in an attempt to get us to buy more models somehow.