Frontline is a different beast to dueling, really it's all about positioning and knowing when to engage and back off to ensure you're not throwing away tickets. I don't really use dueling weapons either, I mainly use Billhook.
I'm not bad at dueling, in frontline I've killed people 4 on 1 before and I win against most people, but some absolutely obliterate me and I literally can't do a thing against them!
Happy to play some games though, add me on steam if you want to hop on a server, my steam is in my signature.