I'd say that's pretty accurate. I expected Specialist to be higher and Power Gamer to be lower because I love having a character with a particular niche but that doesn't mean I build particularly effective characters.
Powergamer, in the test is not just about building the most effective character. It also includes liking to add new abilities/improvements to your character over time. It doesn't differentiate the motivation (e.g., whether you to do it for Char Op/Min Max effectiveness in you niche or to represent how your character broadened by picking up news skills relative to where you are and what you have been doing even if it is not the most optimal choice). From the perspective of the test, adding new bonuses, improving old bonuses, and gaining new abilities all add some power/effectiveness to the character and, therefore, liking to see such improvements will gain you some points on the powergamer axis (how much depends on how important your rated it).
I had a similar reaction to method actor until I realized that I, basically, do see dice as a necessary evil. I approach things as I think my character would, but I don't want the GM just basing success on handwaving or their interpretation and mood at the moment. I like the dice, because they are impartial and the bonuses reflect my view of the character (ability and skills) and the things he has acquired (e.g., magic items).
The above also ties into my rating has Tactician. I have no interest in puzzles or mysteries that test me as a player. I like to have such things test my character's and its abilities (back to Method Actor). However, everything else fits. I like the sim and representing what is going on in the setting, because it helps place me mentally in the environment and keeps me there. It helps me gauge the odds of what my character can do in a given situation. Therefore, I can make weigh motivation vs. odds and decide which my character would value more. So, despite not wanting to be tested as a player, I do have a higher tactician rating, based on the test criteria, than I had, initially, thought.