The special text on the Battle of Endor event card reads:
The powers of "Force" resource cards cannot be resolved during this round.
So do we interpret this to mean that:
A) The power stated on "Force" resource cards cannot be resolved/activated/used during this event. But the "Force" resource card's resource value still counts toward's the battle's objective value.
B) "Force" resource cards have no value during this event. It's resource value number cannot be used towards the event's objective value and it's power can not be resolved/activated/used during this event.
We played (A) because we wondered about how (B) might effect the capacity of the event.