OK here is a possible scenario of the Quarter finals
Group A:
Currently NZ is on top of the table followed by Sri Lanka, Pakistan and Australia. All of them have played one match each against a minnow.
Now if Australia beat everybody in the group matches they will come on top
Sri Lanka beat Canada, Pakistan, Kenya, New Zealand, Zimbabwe
Pakistan beat Kenya, New Zealand, Canada, Zimbabwe
New Zealand beat Canada, Kenya, Zimbabwe
So by this way:
Australia = A1
Sri Lanka = A2
Pakistan = A3
New Zealand = A4
and if Pakistan beat Sri Lanka and New Zealand then A2 can be replaced with A3
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Group B:
If India beats everybody
South Africa everybody except India
England beat everybody except India and South Africa
West Indies / Bangladesh beat all the minnows / Associated teams
India: B1
South Africa: B2
England: B3
West Indies: B4
and if India loses from South Africa then it will become B2 and South Africa B1
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so by this way:
A1 (Australia) vs B4 (West Indies)
A2 (Sri Lanka) vs B3 (England)
A3 (Pakistan) vs B2 (South Africa)
A4 (New Zealand) vs B1 (India)
Well Pakistan must find its way to avoid playing against South Africa and challenge them either in Semi Finals or Finals... Proteas are popularly known as chokers but still they are one of the best side in the world. I usually rank them well ahead of India