^ SL isn't all about Sanga and Jaya. Sure if you take these 2 out they might struggle to some extent against strong teams but even than they are still miles ahead of us. Malinga still has some good years left in him, Mathews is one of the top all rounder in the shorter version, Chandimal is already starting to establish himself in the team, Perera is a handy batsman down the order, they have a world class spinner in the making in Randiv. I don't see SL becoming a weaker team when Sanga and Jaya retire. Sure they might not have the same calibre player to replace these guys but they sure do have more than enough talented players to carry the team forward.
You are making it sound as if we already surpassed the current NZ team and WI. Sure we can beat them but the real question is how often?