Another mind boggling aspect of Amazon’s review system is that it categorises multiple products / variations under one. So if you want to buy products X with variations X1, X2 and X3- the review page for product X1 will also show X2, X3 ratings bundled together. You don’t quite know the rating of X1 individually. You can filter reviews out by the overall rating is the aggregated view. I can’t believe how this is helpful for customers.