The tests are only a guide. Like the weather man can only make an "educated guess" the tests are also fallible. Nobody's perfect (even me!)
I doubt any prospective employers would see the report from those tests. However they are likely to see the final report from the FTO when you've completed the training and (particularly in a school like Oxford) it will have a bearing on whether you get a recommendation.
Too many people on this forum have a huge "integrated schools are con-shops" chip on their shoulder. I've heard that many of these people also only buy Netto's baked beans and think that Lambrini's just as good as Moet (they're both sparkling white wines aren't they?)
Are you cut out for this career? If you want it badly enough and you have the aptitude, then you only need the attitude to change your approach to leadership / teamwork situations. It comes naturally to some people, others have to work on it. Emphasis on the work part.
Good luck.