He had the greatest low post moves ever...is the NBA career blocks leader, is in the top10 all time for career steals (mind blowing for a center), 10th in career points, and he won 2 rings. Unlike Wilt and Russell he did this in the modern era against much bigger and stronger competition. Unlike Shaq and Kareem he had very little team support when he won his rings--except a soon to retire Drexler one year.
On the road to his rings he handled Shaq, Ewing, and Robinson.