Not quite 'authentic'

As someone who cooks Indian food often (and whose background is Indian), I am always interested in trying packaged/processed Indian sauces to see if they actually taste 'authentic' and live up to what we would make at home. I will say that everyone has their own version of classic dishes such as Butter Chicken, and it's because everyone has their own spice blends, family secrets to add in, and we cook by 'taste' rather than exact recipes.
This one didn't quite taste authentic and has more of a tangy tomato based flavour rather than a creamy or buttery taste. The spices and seasonings were also quite mild in nature, likely tamed down for the general public.
Overall, not the best representation of butter chicken, and I'm sure if you were to follow the many recipes available online, you could make a better one from scratch, it's not that difficult I promise!