It's "ROLE playing game" not "ROLL playing game". ME2 is more of an RPG than ME1. Now it's been years since I've played either, but I don't remember a single decision in 1 that wasn't just advance the story or advance the story but special. There is no Role to play. At least in 2 there are decisions to be made on who lives or who dies, who to recruit and who to get loyalty for.
It's "ROLE playing game" not "ROLL playing game". ME2 is more of an RPG than ME1. Now it's been years since I've played either, but I don't remember a single decision in 1 that wasn't just advance the story or advance the story but special. There is no Role to play. At least in 2 there are decisions to be made on who lives or who dies, who to recruit and who to get loyalty for.
Collecting +1's is not an RPG.