Is there something obvious wrong with the damage rolls? Part Deux.

This time I picked a rogue (+3 from dexterity), and let her attack with her short bow. That's 1D6+3 (4-9) for an average of 6.5. However, the opposition has resistance against piercing damage, which slashes it all in half. This time I stopped early, because it was obvious where this was going again.

3
2
2
4
4
4
2
2
2
4
4
3
2
4
3
2
3
4
3
4
3
3
4
2
2
2
5 (CRITICAL HIT)
4
3
3

TOTAL ROLLS: 30
TOTAL DAMAGE: 92
EXPECTED AVERAGE: 3.25
AVERAGE: 3.07