Although she could see every movement, that doesn't mean she can dodge and counter every attack that she sees. That depends on her speed and strength. This isn't like the sharingan. The only thing she has going for her is the fact that she notices every movement, and she has night vision. Pretty weak if you think about it.

Edit:

[quote=ArcanicNeon]
So in other words, you can always win. Which is kind of unfair. [/quote]
How is it that she'll always win if she can see every movement? Everyone can, she just notices it more. Of course she'd lose if her opponent was stronger than her.