“Musk is that which smells by itself, not what the perfumer says (about it).”
This line is from Saadi Shirazi, the classical Persian poet which has become a proverb in Persian speaking world. Reviews are at this point what the seller wants you to read.
As long as Amazon is the seller, and host of the reviews there is no way to trust Amazon would be fair in hosting those reviews.
The only way to know about a product is to read about it elsewhere like New York Times which is not selling the product themselves.