Greetings. With regards to you request, my initial thoughts are these:
1) Peak Human Precision - I would think that Cassandra Cain and Lady Shiva from DC Comics. Their precision is peak in terms of combative skill and situational analysis. They can skillfully analyze and react to various types of opponents.
2) Absolute Precision - The only person I could think of to fit this is possibly Astraea from Greek Mythology. She is a the goddess of precision.
Those are just my thoughts. Not necessarily gonna be accepted. Hope your search goes well. Good luck.