PhD. Okkam wrote:
But will not the twf fighter be stronger than both of them?
TWF Fighter has the problem of needing high Dex to qualify for the TWF feats. Slayer (and Ranger) don't have that problem. Of course you can make a Dex Fighter but then the issue becomes either how to get Dex to damage or just living with not having it and stacking static bonuses on damage.