The 2 proportions test is a self explanatory and best practices to decide on the best of two samples , products etc. These can be used to determine the best of two which comes in very close to most of its results and details . These can be actively seen in lots of cricket matches when the compare the players last match performance with the current and rate it accordingly. And we use it every day on the products we buy to get the best of two for a low price which provides all the benefits of the one with higher price.