hell yeah classic whirlwind! since Iron Maiden was removed from oblivion knights, barb is an absolute beast.
probably still below Hammerdin in P8 games i'd guess, but i never had good enough ww gear to put it to the test. :-) doesn't matter though, i would much rather play ww even if it's less powerful. sick skill!
(it's not just ww and frenzy fyi, it's everything. but with certain skills it's just a lot more noticeable. they changed stuff related to (de)syncing -- they did not actually touch ww itself.)