You're probably plain awesome
From what I have heard, every person uses a series of functions to go about their daily life. The strength of each function and their corresponding order is what determines personality type. Perhaps that is socionics more so than mbti, I'm not sure.
It's very possible to have a balanced T and F function, and therefore feel that you have both strong relationship/people skills and strong analytical/logic skills. If that's the case, I imagine it just means that you can identify with both type descriptions, but probably in the end are an INFJ with a well developed T or vice versa.
Also, the T vs F functions determine what you take into consideration during decision-making. I know sometimes the quizzes and explanations don't always insinuate that. What that means is that you could be very analytical and have excellent skills in that sense and still be a very sensitive, feeling person. There's a brief post by CokeNut somewhere on the forum where she describes that. And even reading posts by many NTs here, most of them express emotion and people skills
On the other hand, there are many INFJs around here who (in my opinion) have stellar analytical/cogency skills, and still identify with the INFJ type.
I don't know how helpful that was.
Ultimately, you are one - one personality type. Yours may simply be a blend of two
It's very easy for some people to pin-point themselves within a certain type, and harder for others. In the end, it's a tool that can help you grow and learn more about yourself. Still, I do understand the desire to want to know your type. I also test moderately balanced between the S-N and J-P.