There is always someone faster, just like the "Wild West". Whether it's the car or the driver, someday you will lose. Even the professionals don't win all the time.
Reminds me of the story a friend from one of the wingcar clubs told me many years ago. Seams he was invited to join the local Ferrari car club because his Daytona Charger was "exotic enough" to be a member............until that is, he started beating a couple of the "red" ones.......he was asked not to return.... What he never told them was that his "old" Dodge was not stock, even if it looked as such.
Moral....Never take any car, or driver for granted, you just never know when you will come up against a "ringer"