In experience, i think that winning against top geared WD's is nearing the impossible in this patch.
They are just too strong.
No builds as of the moment exist that can hard-counter them on even grounds. Especially with the skill boosts that they got in this patch.
Like Iria said, the best chance to beat them is using a pure power bell build and using a barbs wotb. But even with that theoretical counter, the chances still favor the top WD's, immensely.
EDIT: For the thread, Firebats and Blood Ritual. Don't leave home without them.