It's difficult to make oak ring builds in BG.

You'd need very good defense or healing + blocking. I have seen a streaking sorc and a cloaking NB with enough power and skill to burst BG players, but they don't do too well in duel situations where you can concentrate attacks on them. There were also heavy attack builds with oblivion damage etc, with much better healing but weaker in attack.

2h is even more difficult because you'd be the biggest target without a defensive backbar, and without additional DoTs from the backbar to add pressure. Also every attacks you do consume stamina, making you highly susceptible to CCs. If you focus on speed you'd lose too much attack power, again due to having only one bar to fit everything.

If you want one bar melee, I can only recommend bash builds with max resist (above 45k) by sets like Ascension or Trial by Fire, and swap to Hexos or Order's Wrath for PvE as crits can boost bash. Pick Arcanist or Sorc due to their sustain and shields, and Breton or Nord for additional resist. Don't pick DK unless you want to consume tri-pots like crazy. It's good as a single-target offensive tank and easily do 20-30k damage on bosses without risks of dying.

In any case, check scribing for buffs and debuffs - make sure you have minor resolve and major breach, plus minor or major expedition if you play 8vs8 BGs.