First, this test measured how organized you are. Some muppets like Cookie Monster make big messes, while others like Bert are quite anal about things being clean.
Second, this test measured if you prefer a concrete or an abstract viewpoint. For the purposes of this test, concrete people are considered to gravitate more to mathematical and logical approaches, whereas abstract people are more the dreamers and artistic type.
Third, this test measured if you are more of an introvert or an extrovert. By definition, an introvert concentrates more on herself and an extrovert focuses more on others. In this test an introvert was somebody that either tends to spend more time alone or thinks more about herself.
You are more sloppy, both concrete and abstract, and more extroverted.
Here is why are you Grover.
You are both sloppy. You might not always know where everything you need is. Perhaps you don't even care. Grover cares, but he just is always making a mess. He can't take the right order when he is a waiter, and he always crashes when he tries to be a superhero.
You both are concrete and abstract thinkers. Grover always sets a realistic goal for himself and tries to achieve it. However he's also abstract when he comes up with imaginative and unusual strategies in pursuit of that goal. You have a good balance in your life. You know when to be logical at times, but you also aren't afraid to explore your dreams and desires... within limits of course.
You are both extroverts. You enjoy the company of others, and you don't have problems meeting new people...in fact you probably look forward to it. You are willing to take charge when necessary or work as part of a team. Grover also likes being around others. He is eager to try and help those in need. He even uses his social skills as a door-to-door salesman.