The models are identical from what I can tell.
Actually, why not just get rid of the non-BP one altogether as, well, its not really used anywhere at all...
Voted no, because its messy to have articles refering to almost the same thing, with the same name, and having to use disambiguation and whatnot.
There are better ways to handle this I think.
EDIT:
Ok, maybe just split the Raynor, and have it as Raynor_(old) or something, cause the only other appearance uses the old model. (non-htl and all)
That one can talk about the Raynor in CoW, as well as the Valhalla in ItHoV.
Where else is the Titan used?
EDIT2:
On second thought don't split it at all.
Look at the Akrotiri page, it covers the INFR1, PI, and ASW versions just fine.
Textures are totally different, tables are totally different, the models have been tweaked (and in one case completely re-done in HTL version), they are central to two major campaigns, and they all share the same page just fine!
Unless you want to split that one too. Have fun.