I'm in Committee 179 too. I had compared my application to a friend of mine last year that got CGSD, but the major difference was just that she got a NSERC USRA and CGSM while I had other internal USRA's. It seems like NSERC really likes to give PGSD/CGSD to those who have previously received other NSERC scholarships.
They only break down the categories in the two sections that they weigh us in: Research ability etc. and Relevant experience etc. But that's it... Just two grades (1-6) and how you rank based on those two grades with everyone else in that committee. There's no comments, no suggestions, nothing. So I don't know what NSERC is doing having us wait until June for these results...