Dear Ather,
My guess is it all depends on ur VO,the person dealing ur file as well has ur background..No doubt who,what and where u r does play a crucial role on ur file..for some being just that they r saved from many thing,but for few like us we still hang on the borderline,with hopes that the wind blows us on right side.It's not that CIC is showing partiality,they r also concerned and its their right as well to be fully satisfied that the decision they have taken is the right one,I wouldn't blame them for anything when you see where and how our world is heading nowadays.
As 4me this time they have not said anything on my work experience for which i had sent them the proof,I hope they were satisfied from my letters and all and they till now have made any contact with my employer yet,They are just waiting for my medicals to give there decision which I pray should b positive.And brother good thing that they are quite for u,i think that ur file is an ideal one and everything seems to b perfect so just wait till u hear fr them for PPR.