Contribution rates are a percentage of pay. When you pay more from compensation into the pension plan, that does not increase compensation! 

If instead of paying 5% of your pay into an RRSP you decided to pay 10% into RRSPs, has your pay increased? 

While the average Canadian has dropped their savings rate by 70% over the last 30 years and now relies heavily on tax funded retirement programs as a result (OAS costs are up 300% in the last decade), yiou should be applauding PS for increasing their savings to adjust for lower bond rates and the effects of 2007.