<scratches head> How is over 100% possible if 100% represents the full color gamut... Anyhow Ive seen high gamut LCD's such as the Dell 2407WFP-HC which feature 92% color gamut vs. the 72% found on typical LCD's ..but so far these high color LCD's suffer from higher than normal ghosting & motion blur.
afaik the backlight has nothing to do with ghosting and motion blur.