Arvo : I wish we could have met differently, Clementine.(Ending of Walking Dead Season 2)

Line is at 2:00 If you didn't steal the medicine, Arvo comments on how He wished he had met Clementine on a different situation because her being kind was uncommon. I believe this line is only triggered if you choose the dialogue "You are not taking any of our stuffs"... In my opinion, it should have been an automatic dialogue but oh well.. I noticed that if you didnt choose any option at the last part and the time runs out, Bonnie notices Rebbeca turning undead, so Does Kenny. But if Clementine chooses to shoot Rebecca by herself, there are no witness to Rebecca turning undead..I wonder if that will play a key role....maybe Luke might