Afghanistan already have done a good job in world cup as they have won 3 games. There only mistake is that they lost to weakest side of this tournament i.e Bangladesh. For Afghanistan it's like winning the World Cup. NZ already know that rest of there games are very crucial to qualify for semis. Pakistan have not secured any win so far against strong teams so there chances are less for semis.
Afghanistan is already a full member and therefore they should strive to enter the semi-finals. For a team like Netherlands (being an associate member) it will be great news just to defeat 2-3 full members. But that is not the case with Afghanistan. If they can't enter the semi-final stage this time as well, then questions will be raised about their test status (similar to the ones that are being raised for full members who failed to qualify this time - West Indies, Ireland and Zimbabwe). Defeating Netherlands today should move them close to a semi-final slot, but two more tough matches await them in group phase.