The goal of marketing is to get you to buy a new racket, not the racket you want. They actually prefer you buy as many wrong ones as possible so you keep buying. If everyone knew the best racket for them, they could simply buy a couple and be good for 10+ years. Industry requires you to be constantly consuming new products.
Looking at the actual specs and understanding them is really the only way to get an accurate picture of how a stick plays. Even then, factors such as feel can only be figured out by demoing.