I had a bowl of chicken vindaloo and rice for lunch yesterday using the 2 different recipe dishes, having rested them for nearly 24 hours. They are so similar in every way that I doubt most people could tell them apart. I do think this recipe, using the Ashoka paste, has a slightly harsher vinegar taste than Rik's paste, but really there isn't much in it. However, I think that had I used cheap white vinegar in Rik's paste instead of good malt vinegar, they would be the same.
I could not detect the extra sweetness that Mrs L noticed in this one.