Importance of the ATPL Theory test results to me is simply the fact that without them you will never have an ATPL.
As long as you have passed them you should have the barest minimum of knowledge that you are going to need so an airline can train you to fly their aeroplanes the way they want you to. I can't see the relevance the actual score would have to any employer, unless the exam actually asked you every possible question on every possible scenario. Anyone feel like writing 14 exams with 14 billion questions each?
My advice is make sure you pass the 14, fly as well as you can, impress everyone you can at the interview with what a super addition to the team you'll make, kiss backside if you have to, network as much as you can, pray, pray some more, beg, beg some more and never stop believing that you'll get there.
Stick to it and you will.
Good luck.