Lets assume 36str, +5 mineral II greensteel, +9 damage bard buff, seeker +6

Bastard sword

2d8 + 5bonus + 13str + 9bard +1d6acid + 1d4bleed = 42 on HIT

2*(2d8 + 5bonus + 13str + 9bard +6 seeker) +1d10burst + 1d10blast +1d6acid + 1d4bleed = 112.5on CRIT

Khopesh sword

1d10 + 5bonus + 13str + 9bard +3.5acid +2.5bleed = 38.5 on HIT

3*(1d10 + 5bonus + 13str + 9bard +6 seeker ) +2d10burst + 2d10blast +1d6acid + 1d4bleed = 161 on CRIT

If you say 2-16 are hits and 17-20 are crits then...

Bastard sword does 54.7 damage on average

Khopesh does 61.8 damage on average

You can check my math... or you can read 1 of the other 500 khopesh > all for 0% fort non-autocrittable mob threads.