But there have been champs who have hit harder ( Marciano , Foreman , Tyson ) , who have been faster ( Dempsey , Tunney , Ali ) .
Who have displayed more exquisite skills ( Johnson , Walcott and even Jim Corbett ) .
But there have been champs who have hit harder ( Marciano , Foreman , Tyson ) , who have been faster ( Dempsey , Tunney , Ali ) , and who have displayed more exquisite skills ( Johnson , Walcott and even Jim Corbett ) .