I have to say that one of the worst fighters ever was when you had to fly the Dralthi in WC1 SM2. I mean it was a scimitar except worse. No wonder they are so fun to blow up, and so damn easy too.
In wing 2 the worst was the broadsword I agree, especially when the ralatha had you with them big ole guns.
None of the others are really that pants but as for cap-ships. Well I hated the Diligent class from WC1 SM1. Whats the point, you can kill it with one salvo. Bleh.
Anyway, why were phase shields so new in WC2 yet I can kill all with my guns in WC3 and 4??