If you are using controller, you MUST use Standard setting to maximize DPS. I think that might be your problem. In my FC, me and one other WAR can do 450+.

Use Defiance only when you have Unchained and so on. Also we Holmgang the Charges.
Here's the parses of me and him.

http://i.imgur.com/ynSavQ2.png
Tera'ul Fiora

http://i.imgur.com/bwS6Pew.png
Daeriion Aeradiir