Do you need to block all 3 points of Darth Vader's All Too Easy card?

Question: Do you need to block all 3 points of Darth Vader's All Too Easy card?

Answer: The full question is: Do you need to block all 3 points of Darth Vader's All Too Easy card to avoid the 20-point damage, or is blocking 1 or 2 points sufficient?

"It's actually the latter. As long as you play any blocking card, [the All Too Easy card] only [does] 3 [damage]. If you have nothing to block with (or choose not to block) then Vader catches you with your guard down." (From Rob Daviau of Hasbro Games.)