Hi Chris,
I use the Nova range of chucks and have a student with a Robert Sorby Patriot chuck. All my jaws, including the large Nova Cole jaws fit both types of chuck. However, you asked about the large Brimarc Cole jaws. As far as I am aware, Brimarc don't manufacture their own jaws, they are just agents/sellers for other manufacturers. Since Brimarc are now the Teknatool agents in the UK, I am guessing the jaws you are referring to are the Large Nova jaws. However they are specified as 12", not 14", although they do state these are for use on a lathe with 14" swing. But, to complicate things still further, you can get 3" extensions to the 12" jaws, taking them up to 15".
By the way, Record Power have done the same as Robert Sorby, with their latest range of chucks, in that they have copied the Nova/Supernova. This means all their jaws are compatible with Nova/Supernova. That's good news as Record's prices are very competitive.
Sorry for the lengthy response but hope it helps.