Huh.??
If you use a shield you are in a constant block animation,since defense is zero.75% of their attacks are being halted by your shield alone & while at that, your zerk swing regardless of its speed is inturrupted,sincezerk is not uninturuptible like conc,it hurts your killing efficiency & speed.
Thats when warcry comes in,it stuns enemies nearby,halting their attacks allowing you free hits.Now if they arent attacking what good is a shield? Get a 2hander..
crash-boom-pulp!.
btw..zerk is just as fast as conc,why call it slow?
Razgriz