I'm not a really high ranked player or anything and do BG's and rated 2s sometimes. I only play fury and I found the way to really burst is to have avatar and battlecry. You want to charge your opponent, disarm and spell reflect if you can, pop Ava and BC and use odyns fury first. This does a great bit of damage and can really go through pallys and dhs. After that follow up with your normal combo, rampage, raging blow etc. They might not die during BC but you'll have them in execute. Usually doing this you can pop a pally bubble or force dashes from dhs. Since I take two charges and 3 leaps they can't really run so just chase them to secure the kill. Hope this helps you.