I doubt very much that he will end up being better than Willie Mays. Mays had 1 season where he struck out more than 100 times, Trout already has 4. Mays had 338 stolen bases. Trout has 113 but has basically stopped trying to steal. Both were/are great defenders. Mays had a CAREER OPS of .941. Trout is at .956 in the prime of his career, that is bound to go down as he ages, IMO. If he stays healthy, Trout could be a top 10 all- time player.