Bernard Hopkins and Shane Mosley are trained by Richardson os is it the trainer or the fighters?

Shane Mosley looked terrible against Manny the very next week Hopkins looked great against Pascal and Hopkins is 46 years old and became the oldest world champion in boxing history. What I am saying how much is a trainer worth. If Richardson was all of that how is that Shane looked the worse any one has ever seen him look in the ring. So tell me what you think>