The difference in basic of PGT and college lecturers should be rectified

The grade pay of PRT, TGT and PGT is 4200, 4600 and 4800 respectivily. The differance in GP of PRT and TGT is 400, while minimumum qualification for recruitment for both posts are graduation+B.Ed.. The differance between TGT and PGT is only 200 and minimum qualification for PGTs is Post Graduatation+B.Ed. Lecturers of universities/collages is gating GP of Rs. 6000 and their minimum qualificaion is Post Gaduation+NET. Why a such big differance between lecturer and PGT and very nominal differance between TGT and PGT. This is unjustified and should be rectified.

Ajay Kumar