All, please go through this thread -
http://www.canadavisa.com/canada-immigration-discussion-board/ee-pcc-from-india-psk-issued-pcc-no-longer-acceptable-t349090.0.html
To be honest it is definitely not clear that PCC from PSK will be accepted for residents other than Delhi as per CIC website. And discussions based on speculation as to whether Central Government body has more authority than local state police station, etc is not authentic nor official interpretation. I would suggest to go by the words we can see officially on CIC website unless you are comfortable with submitting your application with PSK PCC inspite of the instructions from CIC (albeit some people feel its ambiguous but I don't).
Also, PCC requirements from Police checks are very strict. One needs to provide proof that one is reiding in address mentioned, Police constable will visit the home and get 2 reference signatures from 2 neighbors etc. Also, in India any crime will not stop you from going out of country and reported to Passport department. But if there is a criminal offence like teasing girls, stealing etc it will be reported by Police in the PCC. So comparing PSK authority over Police station is not fair.
I am just giving my opinion.