Well, laptop drives were designed to be used in laptops, which are typically put to sleep when not in use. Now that blade servers have started to demand small drives that can handle 24/7 operation, they have started to make drives to meet those needs.
In normal use, there should be no benefit to the enhanced drive, as it's unlikely to be powered on enough to make a difference. (Presumably, the primary enhancement is longer-life bearings and spindle motor.)
tooki