All right, from what you said, I can see that there is something wrong with your eyelids, because as you can see, generally speaking, the speed of blinking of both of our eyes are identical with each other. If one of them is abnormal, then there must be some reason, I mean, maybe the muscle of your eyelid has got some problem, perhaps this is due to a lack of vitamins and something wrong with your nervous system. Sometimes a lack of vitamins and minerals might cause such problem, and you should take an eye exam before taking any further actions.