The Real Exam is easier than the standard tests in Enthuware. Your average score is quite good, I think I'm only averaging around 70% in enthuware's standard tests(passing only 2 standard tests) but I passed the real exam. Kudos to enthuware and Gupta's book.
From my experience, Enthuware tests are harder than real-life OCAJP and that makes sense. But don't get into the trap of thinking "why learn more?". You never know what you'll get on the exam. Even EW authors have said that some test-takers had questions on topics not even mentioned in exam objectives.