Dear Friends Please see these lines of the UGC 

Criteria for Awarding Junior Research Fellowships 
Out of the 43957 candidates qualified for Lectureship eligibility (including 
JRF), 29780 candidates had applied for JRF, while the slots available for 
JRF are 3200. These 3200 fellowships have to be distributed among the 
29780 candidates who come under the consideration zone for JRF. In 
order to restrict the number of JRF awardees to around 3200, a 
methodology has been evolved for allocation of JRF slots among different 
subjects category-wises.

Further few lines for your kind consideration

As it is self explanatory that there is no slot method for NET. Neither UGC provide any assistant like fellowship for NET qualified candidates nor the JOB guarantee, then what is the problem to declared the NET result on the basis of cut off given in the Advertisement.

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Second thing, If there is different %age criteria for various subject in preparation of JRF, then why a common %age criteria for all in the preparation of NET result.

Friends there are also so many ambiguities if you go through the link http://ugcnetonline.in/JRF%20Crit_12J.pdf

Now share your views and do some thing. Hope in a positive response.