What is more professional Document translation or Interpreter?

 THE MORE PROFESSIONAL FROM MY OPINION IS THE INTERPRETER BECAUSE HE NEED TO BE SO PROFESSIONAL IN TRANSLATING THE WORDS IN HIS MIND SO FAST AND IN THE SAME TIME GIVE THE ORDER DIRECTLY AND SAY IT THE MORE BETTER HIS LANGUAGE SKILLS THE MORE HE CAN TRANSLATE FAST BY TALKING FAST AND CACTH THE WORDS FAST  

From my own point of view document translations is more professional than interpretation.