Ok...I think that if the wax, FO percentage, and any additives were exactly the same and the tart was 4 oz. and the wickless was 4 oz. then you'd probably get a similar scent throw. Of course, a lot would depend on the opening of the container. I doubt something like a square mason jar would be a good one for the wickless. I think it would still throw, but I doubt it would work very well because of the narrow mouth. But say you were using the Ball Platinum jar with 8 oz. of wax and you had a massive tart burner that could hold 8 oz. of wax and had a wide mouth, then I bet the scent throw would be very similar. Of course, I haven't tested this but I don't see why it would be any different.