Countering Witch Doctor's ultimate

Anti-Mage I think is really good, both Mana Void and Blink- Abyssal Blade stun through BKB.

The way to counter Witch Doctor's ulty is to buy armor since Death Ward deals physical damage. Others way is through stun lock Earthshaker, Tidehunter and silence Doom, Silencer etc. And stuns that go trough Black King Bar: Mana Void, Abyssal Blade, Omnislash, Nether Strike etc.

Actually not. Weave needs a significant amount of time to be useful, while Death Ward is (or at least should be) casted with a surprise effect, and Warcry provides your allies with 16 armor without a need of waiting.

Look. Even Dazzle with Aghanim's Scepter and level 3 Weave will take 9 seconds to grant your team with 15.75 armor, which is still lower than what Warcry can make immediately. Death Ward lasts 8 seconds at best, which is very rare to see. In 8 seconds, in best circumstances Weave will give you 14 armor. Also, remember that you are getting only 1.75 armor each second. On the other hand, Warcry gives you 16 armor and movement speed, and you dont need farm and levels on your position 5 support, but (at worst) level 14 on your 1st/2nd position carry, or position 4 support.

Warcry also has a nice radius, and you just have to click the ability, instead of pointing it on the ground. In those clutch moments you gotta have things working for you right now. There is no time to wait when Doctor is doing his dance.

On paper Weave looks better, but we all know, that this is very unlikely to have the enemy Witch Doctor use his ult when Weave is at it's peak.

In practise, Warcry is just a better ability against Death Ward than Weave. I am perfectly sure of it.

Guardian Angel is better xD

in the words of actionslacks: how do you feel when i press R and your ultimate becomes useless? =D

...no love for Ghost Scepter?

That's so overrated. Just like it is against PA...
(sarcasm)

The easiest and most reliable counter to a core WD is Omniknight. His ult grants immunity to physical damage.

Death Ward works inside Chronosphere

not if Witch Doctor is in it