Maybe Paul`s voice is better than George`s (let me speak about George, cause if you compare John and Paul you admit that George`s voice is worse), but George`s voice is recognizable, pleasant, charmant, has its own peculiarity, while Paul`s is very hard to distinguish, first, when they sang in the Beatles, and, second, if you are asked to identify the person singing without your knowing who it is, i don`t think you will easily and immediately identify Paul. You will fail at least once! His voice maybe technically good but it is devoid of anything characteristic to this particular singer. I like John`s voice, it is special, I like George`s voice with a little harshness, I like Paul`s voice but less, it has nothing special to it. And let`s not compare their voices later in life, cause they changed under the influence of many things and it would be unfair to compare them, let`s compare them when under equal circumstances.