The certification badge does not show your score. Whether you pass with 70% or 100%, they look the same. I would say as long as you pass, you're fine. I would never ask to see a candidates score, although I'm sure you can find one employer who might.
Having taken all of the exams of the years, I would say the scores don't really matter. First off, they like to include beta/test questions that are unscored in your exam. I've confirmed this first hand with exam writers. So, you may have a question that makes no sense or contains an error, but is unscored.
Second, Jeanne and I have both found actual errors in
test questions and worked with Oracle to resolve them. For example, when I first took the 1Z0-815 there was a diagram that was supposed to appear but instead it was javascript gibberish. Oops! I guessed the answer based on the context clues! Oracle has since fixed this.