Will ROMs for Moto X work on the XT1080?

I can't seem to find a definitive answer to this question and it's not for lack of looking. I know that the Cyanogenmod "unified" ROM is the same for both devices which, as the owner of a Droid Maxx, I find encouraging. But there is very little ROM development activity around the Ultra/Maxx while there seems to be a TON of activity around the Moto X. I've searched many of the Moto X Development threads for references to the Maxx and/or the XT1080 but haven't found many (mainly in signatures). Is there a rule of thumb about this, like "all Moto X ROMs are compatible", or "none are" or "here's how to tell which ones are"?

I, too, have discovered that there are a couple of ROMs that are XT1080 specific and that msm8960dt releases will work on the Droid Maxx (and other phones). What I'm most curious about are all the ROMs being discussed on XDA's Moto X Development forum. I've had a Droid Razr Maxx and a Razr Maxx HD. I was once flashing a new ROM once a week, it seemed. Many of those devs, or ones that stepped in to replace others, are active on the Moto X. Carbon, LiquidSmooth, Pacman, ParanoidAndroid, Eclipse and many other custom ROMs I've not heard of are in active discussions and, it seems, active development for the Moto X. If Moto X and Droid Maxx can both be flashed with the same Cyanogenmod ROM (msm8960dt), can custom ROMs built for one be flashed on the other? I've got a Maxx Droid DE and another one that's rooted but has a locked bootloader. Can any of those Moto X ROMs be safely flashed on either/both or these phones?

I think I understand what you're saying. I've gone back and reread the various ROM threads with your criteria in mind and found that several are indeed msm8960dt-based while others say (for instance) "must be on 4.4.2 before flashing". If a ROM is "based on AOSP" does that tell me anything about compatibility?