15” limited choices: Cooper Cobra vs Mastercraft Avenger vs BFG Radial T/A vs ?

How does the wear rating affect performance? I know what the wear rating means but how does that correlate in performance? The higher the rate number the harder the rubber? (Maybe) I know the higher the number the longer they are supposed to last compared to a test tire. Iv always shopped for a higher rating to get more life out of them.