This is the IndoG2 information from the 1.9 Release notes:
So, there you go. Legendaries CAN be better then Uniques and from design perspective IndoG2 is supposed to be better then IndoG1.
Here you go. Cautious strike is supposed to be extremely powerful AND annoying.
The same release notes also give some clear examples of HOW to counter it. I suggest everyone having trouble with IndoG2 to read the notes again.