No, they are not very different. You were 55% introverted before and now you are 52% extroverted, it’s only a difference of 7 percentual points.
It’s a drastic simplification, I’ll have to agree with that, but I wouldn’t say it’s unreasonable. Treating things as if they were more simple than they actually are is (to a certain extent) perfectly legitimate for people aiming to achieve practical results. In fact, it’s often the only way to achieve those results.
I have some difficulty doing that myself, but we have to recognize that it is necessary.
They are, or, at least, the thinking and feeling aspects of this test are. Either you make your decisions based on logic and rationality or you do what you feel like doing.
I’m not saying that a person’s reasoning can’t be influenced by emotion or that emotions can’t be influenced by reason, I’m just saying that you can either be generally cold-headed or generally hot-headed.
Introverted individuals prefer solitary activities and get exhausted by social interaction. They tend to be quite sensitive to external stimulation (e.g. sound, sight or smell) in general.
Extraverted individuals prefer group activities and get energized by social interaction. They tend to be more enthusiastic and more easily excited than introverts.
You have to remind yourself that the theory doesn’t apply the words according to their literal meanings (maybe they could have comoe up with better names for the aspects, or maybe not, I don’t know)
Observant individuals are highly practical, pragmatic and down-to-earth. They tend to have strong habits and focus on what is happening or has already happened.
Intuitive individuals are very imaginative, open-minded and curious. They prefer novelty over stability and focus on hidden meanings and future possibilities.
Judging individuals are decisive, thorough and highly organized. They value clarity, predictability and closure, preferring structure and planning to spontaneity.
Prospecting individuals are very good at improvising and spotting opportunities. They tend to be flexible, relaxed nonconformists who prefer keeping their options open.
It’s true that some traits, like introvertion and extravertion tend to fluctuate considerably, but, unless you’re in the line (as, apparently, you are) you are generally extraverted or generally intraverted.
Anyway, as I said before, this type of test shouldn’t be the basis of modern psychology, and one should not take it too seriously, but I just don’t think it’s fair to compare it to astrology.