[pzhon]

Obviously, to run really well involves both, but it is still a meaningful question.

You have a long-run average for each of your hands. E.g., you might win 12 big blinds/hand with AA in NL, or 1.0 BB/hand with AKs in limit. Look at your good sessions, and add up the values for the hands you received, and compare that with the total amount you won. You can also determine the amount of your variance which comes from your starting hands. I believe you will find that most of your profit in good sessions does not come from your starting hands, and starting hand variance is only a small component of your total variance.