After thinking about it, this is what I came up with. I don't know if the style seems a little overpowered, but I hope that everyone will help correct it if it is.
Kenjutsu
This is a style a fighting to be use with a Greatsword or a Bastard Sword. It is a style that focuses on power and precision. Those who mastered this style live by the motto : "One Strike, One Kill".
Tier 1 - The practitioner of this style learns very early that each strike should be the last, as such they have learn to attack the most vital parts of the adversary. They gain a +1 to their AB while using this style.
Tier 2 - On a successful attack, the practitioner ignores the foe's armor, so foe does not get to apply his AR against this attack. The attack only does the weapon's Base Damage. It does not do any Scaled Damage. However, foes with a natural AR would still get to apply that against this attack.
Tier 3 - The character spends a little extra time to put a little extra oomph! into his attack. If successful, this attack does 5 extra points of Base Damage.
Tier 4 - The mastery of this style is such that the character can add +1 to their AB (+2 total with the Tier 1 Bonus) while using this style.
Tier 5 - The character takes extra time and care in making his attack and in exchange he receives 2 extra Boon Points upon making a successful attack
Of course, I will probably rename the style to fit my setting, giving it more of a Martial Arts feel to it. And I want to thank AresLunthar for his advice/help. It is very much appreciated.