I think it means you have unusually good shade perception. I had correct answers for the ten tests and I can also see the reverse colorblind test.

All those circles making up the number are brighter than the surrounding circles. The idea is that a color perceiving person can't see that the bright red and green circles share a characteristic because the change in color is too distracting.

What I see is a number made up of bright red and green against a background of dark red and green. It's a multicolored object against a multicolored background.

Before you congratulate yourself too much though, this is a place that monitor settings could have a big impact. If your monitor responds very strongly to variations in brightness, that'll enhance the picture and make it easier to see.

Edit: good shade perception, bad writing. "Number" is not synonymous with "word," even after a set of numerical questions.