I noticed your wtf moment with Danzo vs Iruka.
This is a trick that can be abused with the "Auto" function.

The Auto AI is ran by the servers and does not take latency or animations into consideration.
If a players enable Auto during mid combat, ninjas with promt skills such as GNW tenten, Wind main (Sand dust), Danzo, etc. will almost be to impossible to counter - even if you activate the interrupt before the skill is launched.