I would say, Sri Lanka, New Zeland, West Indies are the only team which are quite successful at the momment and have lots of bowling variety. They Swing bowlers, Fast Bowlers, Good genuine spinners, Medium Fast bowlers. All as of now are a good fielding side and they have batsmen with a mix of youth and real experienced guys who have guts to take on any opposition.
This world cup i believe we need to closely watch on these 3 teams whom i think have a chance win the cup. If the pitch assists fast bowlers then i believe south Africa will have a real chance to win...