I tried it but it caused irritation for my skin so I wasn't able to use it long enough to know if it would have ever done anything for my skin (other than irritate it). I think my skin didn't like it due to the Grapefruit extract and possibly the clary sage. My skin doesn't tolerate these potentially irritating ingredients.
Also, L-ascorbic acid is THE gold standard for vitamin C in the scientific community so if you are using that and like it, I don't think you will get any better results from a different type of C, unless you are experiencing irritation and that is why you want to try a different type.
The only real way to know if it will work for you is if YOU try it.
I don't know how anyone can know for sure if reviews are fake or not. i don't know where you got that information but I would be suspicious of claims from someone that hundreds of reviews are all fake (could that be coming from competing brands?? hmmm).