What I'm saying is this: In my very first playthrough I met Duncan and Loghain only very briefly and they didn't have many lines at all - Duncan during the City Elf origin and in Ostagar, and Loghain outside of his tent in Ostagar and then at the Landsmeet. I didn't even know he could be a companion back then; with Alistair bitching so much, I thought Loghain had to die. Still I liked both Duncan and Loghain very much right there and then, and not after I saw their other, extended content. Same goes for my City Elf and Cousland relatives. Or take Cullen - he has even less content, but he has quite the fanbase!And Duncan and Loghain had quite a lot of lines each - Loghain was a full NPC for an important part of the game, including Return to Ostagar(think Bethany or Carver), and Duncan was one of the key figures of the game, who was present in all six origins. DA2 didn't have these origins, so there was no need for a Duncan-like figure.
I don't get the same feeling in DA2 for any new character really. Bethany died in my first game and I thought "So what? I don't know her at all." Carver left and I thought "Whatever." I can only think of two people I felt a bit of an attachment for - Meredith because of her visual design and because she's barkin' mad, and Mother Hawke because of the "All That Remains" quest. Some of the templars (Thrask?) had some potential to be likable, but to be honest when they reappeared I often thought "Who are you again?".