Not all builds value the three stats equally. The table below gives a quick recommendation based on your playstyle and weapon choice.
Skill-heavy casters (Staff, magic weapons): Max Cooldown Reduction. Your damage comes from skill rotations, not basic attacks. Pour points into CDR first and Health Bonus second. Attack Power is almost useless for this build type.
Aggressive melee (Hammer, Greatsword, melee weapons): Health Bonus first for survivability, then Cooldown Reduction. Melee builds need to close distance constantly, which means more opportunities to take damage. Once you have enough HP to survive one extra hit, shift to CDR for more skill uptime.
Fast weapon users (Daggers, Fast Blade, light weapons): Cooldown Reduction first, then consider Attack Power. Fast weapons use more basic attacks in their rotation than heavy weapons, so Attack Power can give decent returns once your CDR baseline is solid.
Balanced / unsure builds: Follow the default split — Cooldown Reduction > Health Bonus > Attack Power. This works for every build and every race until you figure out your specific direction.