Actually Deadly Strike cap is 95% not 50%. My zealot uses a Ethereal Death Cleaver and has 99% Deadly Strike at 2,298 - 7,112 Damage.

As for the comment on a eBotD Zerker being fast, its actually no where close to the speed a Druid needs in wearwolf or any form. A Zerker axe is like base Zero with +60% IAS putting it at -60%. Well use a Cruel Phase Blade of Quickness with 2x 40/15 IAS Jewels and you get base -30 with +40% IAS and then +30% IAS so you total at -100%. Thats a hell of alot faster then a eBotD zerker and on druids, speed counts not damage. The best weapon would be a Cruel Fanged Knife of Quickness 2 Sockets, or a rare with 40 ias and hella ED and 2 sockets.