They have said there will be loot and enhancements and maybe even buffs that grant double strike.
Since x double strike gives x% boost to 2hf and only about x(.7) to twf how are they ever EVER going to balance double strike? This sets up to where the 2 compared poorly geared will be completely different in balance then the 2 very well geared. It seems the better the gear the 2 have the closer the DPS will get or that at the very top of the best geared people that THF might pass twf. How can they balance something that is by design ment to not be balanced and will vary greatly from person to person how much of it they have?