Good question!
I stand corrected, but I would say its the same concept.
Per destination load balancing, could either lead to a link used constantly at all times if all packets are going to same destination. or 2 or more links used at same time for different destiantions.
The end results is that the load is shared over more than one link....load balancing.
HTH
Sam
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094820.shtml