Facing an AC 18 opponent at 12th level?
Plane Sailing, the "problem" with 3.0 Power Attack is that the 2 Weap Fighter got some benefit out of using it and 2 Handed Fighter got next to nothing. The 2HFer was still dealing more damage and had more feats to spend, but the situation didn't fit the designers' idea of what PA should be. So now the 2WFer gets little or no benefit (depending on weapon choices) and the 2HFer gets a boost. I am unsure where the poor sword&board fighters fit into all of this.
BUT in 3.5 you now get things like Greater Weapon Specialization, which benefits 2WF more than 2HF. You don't necessarily need added damage dice to make 2WF effective, any added damage works. That's why the 3.0 PA was a good choice for the dual-wielder. Also, the 2WF feats can now be learned at lower levels (no more Ambidexterity, lower BAB reqs).
Although the new weapon feats will probably only be practical if you're fighting with paired weapons - two short swords, two daggers, etc. If you prefer something like a longsword and dagger style, you'll need 5 feats for each weapon, plus the 2WF feats, plus any other feats you may want.
Plane Sailing, the "problem" with 3.0 Power Attack is that the 2 Weap Fighter got some benefit out of using it and 2 Handed Fighter got next to nothing. The 2HFer was still dealing more damage and had more feats to spend, but the situation didn't fit the designers' idea of what PA should be. So now the 2WFer gets little or no benefit (depending on weapon choices) and the 2HFer gets a boost. I am unsure where the poor sword&board fighters fit into all of this.
BUT in 3.5 you now get things like Greater Weapon Specialization, which benefits 2WF more than 2HF. You don't necessarily need added damage dice to make 2WF effective, any added damage works. That's why the 3.0 PA was a good choice for the dual-wielder. Also, the 2WF feats can now be learned at lower levels (no more Ambidexterity, lower BAB reqs).
Although the new weapon feats will probably only be practical if you're fighting with paired weapons - two short swords, two daggers, etc. If you prefer something like a longsword and dagger style, you'll need 5 feats for each weapon, plus the 2WF feats, plus any other feats you may want.