This is unclear to me. On page 21 of the rulebook, under "Wounds", it reads: "when a disk with stamina is dealt damage, no more than 1 wound marker is placed on it regardless of how much damage was dealt."
Now, to me, this means that no one individual attack can cause more than one wound. For example, if a River Troll were to use its Strength 10 ranged attack on a Toughness 5 disk, the disk would receive one wound and the remaining 5 damage would be ignored.
But, again, this is on an "attack by attack" basis, so in example 1 above, the disk would receive 2 Wounds and be killed. Individually, each of the Orc disks does enough damage to wound the target, so the target dies.
In example 2, the disk would end up with ONE wound, because the disk with the attack strength of 4 doesn't do enough damage to wound.
This is how I interpret the rule. Anyone else wanna weigh in here?