Draenei appearance change from WCIII to WoW..

Nothing is more annoying then this. WHY do the Draenei in WCIII look like the Draenei Lost ones (which you can find in the Blasted Lands and Swamp of Sorrows)? Then in WoW they look like the Broken (a mix between "Eredar" Draenei which will be playable and Lost ones Draenei).

Really, I'm looking right at them in WCIII. This game is too recent to ignore. Is there a reason they changed how they look completely in the Burning Crusade?