It seems that the developers at Ninja Theory are still hoping to achieve a Teen rating for Heavenly Sword in North America.
A poster on the Ninja Theory forums asked, "Can it be confirmed that the game has the 'throwing a weapon and impaling your enemy on a wall' move?" To this question Tameem Antoniades (Chief Design Ninja at Ninja Theory) responded, "Spear had to be dropped because 'Impaling' is considered a sure-fire way of getting a mature rating. Frustrating!"
It's a no-brainer for Ninja Theory to strive for a T rating, simply to allow for a wider range of people to be able to purchase the game. Heavenly Sword will certainly be a fantastic title despite this minor cut, though many fans may question the lack of blood and gore for a game as combat-heavy as Heavenly Sword.