Retards need to understand that trying to kill someone and going all out are mutually exclusive.
Kimimaro was trying to kill Lee, yet he never even used 50% of his potential arsenal against him.
That's because Rock lee dodged all of Kimimaro's attacks due to drunken fists. Kimimaro would killed Rock Lee if it isn't for Gaara.
Plus, Kimimaro died before he nearly kill Rock Lee and Gaara.