bardolph said:
Not really. You're paying a feat to bump your damage die by d2 (over the longsword) or to get +1 damage (over the greatsword). Strictly by the numbers, Bastard Sword Proficiency is worth about the same as Weapon Focus.
It stacks with weapon focus. That's what makes it broken.
Sword and Shield
Spends a feat on bastard sword proficiency.
Does 1d10+str damage per basic attack.
Has +2 ac.
Has +2 reflex.
Has -2 armor check penalty.
Two handed Sword
Has a feat unspent
Does 1d10+str damage per basic attack.
Has no armor check penalty.
That's the comparison. If you include weapon focus in your calculations, you get:
Sword and Shield
Spends a feat on bastard sword proficiency.
Spends a feat on weapon focus.
Does 1d10+str+1 damage per basic attack.
Has +2 ac.
Has +2 reflex.
Has -2 armor check penalty.
Two handed Sword
Spends a feat on weapon focus.
Has a feat unspent
Does 1d10+str+1 damage per basic attack.
Has no armor check penalty.
And you're still in the same position. The next logical step is to give out bastard sword proficiency to the two handed fighter (although its a little questionable whether the ability to improve absolutely everyone by giving them a bastard sword makes the bastard sword more balanced):
Sword and Shield
Spends a feat on bastard sword proficiency.
Spends a feat on weapon focus.
Does 1d10+str+1 damage per basic attack.
Has +2 ac.
Has +2 reflex.
Has -2 armor check penalty.
Two handed Sword
Spends a feat on bastard sword proficiency.
Spends a feat on weapon focus.
Does 1d10+str+1+1 damage per basic attack.
Has no armor check penalty.
So apparently the only final comparison is this. Which would you rather have? -2 armor check penalty but with +2 ac and +2 reflex? Or +1 damage, no ac or reflex boost, and no armor check penalty?