Yes, there are just too many similarities to ignore at this point. From the visuals, lighting, coding, mechanics, text, dialogue, plot points..it goes on and on. We are well beyond coincidence now. I always had a feeling he would be back under a nom de guerre.
If by some miracle they are not one and the same, then my question is how in the hell did Carbon manage to establish contact with recluse Ero, as he claimed he did? So Ero ghosts and ignores absolutely everyone else (especially his paying patrons) for 1 year, but this supposed rookie dev somehow is able to not only maintain communications, but he is freely given the keys to the castle and all insider AVN development information that goes with it? What, out of the goodness of Ero's heart? Is Carbon sending him his epic butthole pics in exchange?
No, not buying this charade.