I've seen a lot of debate over the weakness of Bastard Swords, so I did some quick research. Here's what I've found. I used the Damage Calculator at:
Results (Assuming the developer of the damage tool passed first year college statistics):
1. Bastard Swords from an average DPS perspective are roughly equal to Khopesh's before the Improved Critical feat against mobs with a decent AC.
2. Khopesh's only have a slight advantage after the Improved Critical feat ~ 2 DPS better.
1. Khopesh's are only slightly stronger, however are much more difficult to collect due to their popularity.
2. There are no Green Steel Bastard Swords currently, so Khopesh's make more sense from this standpoint.
3. There's no reason to have a hate on for Bastard Swords. They are a great weapon and are widely available.