No - their financial situation has no bearing on a PR sponsorship application. No - their resources will not be considered as supplementary to your income. You have to meet the income requirements on your own (your spouse/common law partner can co-sign).
Note that if you are planning to sponsor your parents in 2016 - the application cap was reached in a day and a half last year. If you haven’t already submitted your application - it’s too late for this year and you’ll have to wait until 2017.